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For the analysis of civil structures, general-purpose structural analysis software 'ISCEF'

For the analysis of civil structures, general-purpose structural analysis software 'ISCEF'

It is a structural analysis software (CAE) specialized for civil engineering structures such as dams and related structures. It is capable of coupled analysis of structures and fluids, as well as slip stability analysis.

"ISCEF" is a general-purpose structural analysis code developed independently by our company using the finite element method. It excels in the analysis of ground, rock, and related structures due to its dynamic analysis coupling capabilities for structures and fluids, as well as its crack tracking functionality for concrete structures. However, it also demonstrates sufficient functionality in general structural analysis due to its high versatility (including two-dimensional and three-dimensional problems, static and dynamic problems, linear and nonlinear problems, etc.). We have a proven track record not only for the dam body but also for various ancillary structures such as steel gates, dam intake towers, and gate pillars. Leveraging the strengths of our in-house development, we can accommodate detailed customizations based on your requests. Additionally, we offer contracted analysis services using the same software. *For more details, please refer to the PDF document or feel free to contact us.

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ISCEF Utilization Case / Dam [Crack Tracking Function for Concrete Structures]

ISCEF Utilization Case / Dam [Crack Tracking Function for Concrete Structures]

Nonlinear dynamic analysis can reproduce the occurrence and progression of cracks at their origin! ISCEF, a structural analysis software suitable for large-scale structures.

We would like to introduce the application examples of the structural analysis software 'ISCEF', suitable for civil engineering structures. In concrete structures such as gravity dams, it is necessary to simulate crack propagation, reproduce the movement of joint connections, and conduct analyses considering propagation speed by modeling the reservoir as a compressible fluid. To understand the vibration characteristics of the entire dam, we propose optimal analysis procedures and methods, taking into account the characteristics of the analysis targets, including "actual eigenvalue analysis," "static analysis," and "time history response analysis." [Gravity Dam Analysis] ■ Actual Eigenvalue Analysis ■ Static Analysis ■ Time History Response Analysis *For more details, please refer to the PDF materials or feel free to contact us.

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[ISCEF Use Case] Tunnels and Excavation

[ISCEF Use Case] Tunnels and Excavation

Introducing case studies of the structural analysis software 'ISCEF', optimized for large-scale structures.

We would like to introduce the case studies of the structural analysis software 'ISCEF', which is optimal for civil engineering structures. In tunnel design, which has been based on empirical engineering, there is a growing demand for deeper investigations through numerical analysis. Our company proposes the most suitable analysis methods according to construction conditions such as excavation and support work. Furthermore, by reproducing the nonlinear characteristics of structural elements (beams, rods, springs, etc.) necessary for modeling not only the ground but also the structures, we can achieve analyses with enhanced reproducibility. [Tunnel Analysis] ■ Initial Earth Pressure Analysis - Pre-excavation earth pressure stress - Post-excavation stress distribution ■ Construction - Construction model - Post-construction stress distribution *For more details, please refer to the PDF materials or feel free to contact us.

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[ISCEF Use Case] Temperature Analysis

[ISCEF Use Case] Temperature Analysis

Introducing case studies of the structural analysis software 'ISCEF' optimized for large-scale structures.

We will introduce the use case of the structural analysis software 'ISCEF', which is optimal for civil engineering structures. In large-scale mass concrete construction, such as dams, temperature stress due to the hydration heat of cement and temperature cracking become significant issues. To achieve higher quality construction, factors like lift schedules and curing conditions have a major impact, and these construction conditions also reflect on the project timeline and costs, necessitating more optimal construction plans. Our company considers the characteristics of the analysis target and proposes appropriate analysis approaches and methods. 【Temperature Analysis】 ■ Analysis Settings ■ Temperature Conditions ■ Constraint Matrix Method *For more details, please refer to the PDF materials or feel free to contact us.

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ISCEF Application Example / Temperature Analysis [For Large-Scale Mass Concrete Construction]

ISCEF Application Example / Temperature Analysis [For Large-Scale Mass Concrete Construction]

From thermal conduction analysis due to mass concrete placement to temperature stress analysis. We will introduce examples of the use of the structural analysis software 'ISCEF', which is suitable for large-scale structures.

We will introduce a case study on the use of the structural analysis software 'ISCEF', which is suitable for civil engineering structures. In large-scale mass concrete construction, such as dams, temperature stress due to the hydration heat of cement and temperature cracking become significant issues. To achieve higher quality construction, factors such as lift schedules and curing conditions have a major impact, and these construction conditions also reflect on the project duration and costs, necessitating more optimal construction plans. Our company proposes appropriate analysis approaches and methods, taking into account the characteristics of the analysis target. [Temperature Analysis] ■ Analysis Settings ■ Temperature Conditions ■ Constraint Matrix Method *For more details, please refer to the PDF document or feel free to contact us.

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ISCEF (AICEF) "Coupled Analysis of Structures and Fluids"

ISCEF (AICEF) "Coupled Analysis of Structures and Fluids"

Equipped with coupled analysis functions for structures and fluids! Compressible fluids considering propagation speed are also available.

For structures that come into direct contact with fluids, such as dam embankments, coupled analysis between the structure and the fluid is necessary. The structural analysis software 'ISCEF' that we handle is suitable for civil engineering structures and includes not only incompressible fluids but also compressible fluids that take propagation speed into account. [Features] - It is possible to model using compressible fluid elements. - Both compressible and incompressible fluid elements can be used for two-dimensional as well as three-dimensional analysis. *For more details, please refer to the PDF materials or feel free to contact us.

  • Site and ground investigation
  • Other civil engineering services
  • Scientific Calculation and Simulation Software

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ISCEF (AICEF) "Nonlinear Model of Ground"

ISCEF (AICEF) "Nonlinear Model of Ground"

Equipped with a method to model the nonlinearity of the ground! Introducing AICEF's sequential nonlinear model.

Two methods for modeling the nonlinearity of the ground are the equivalent linear model and the sequential nonlinear model. The structural analysis software 'ISCEF' that we handle, suitable for civil engineering structures, includes not only the equivalent linear method but also sequential nonlinear methods such as the Hardin-Drnevich model (H-D model), Ramberg-Osgood model (R-O model), and General Hyperbolic Equation model (GHE model). 【Sequential Nonlinear Methods in ISCEF】 ■ Hardin-Drnevich model (H-D model) ■ Ramberg-Osgood model (R-O model) ■ General Hyperbolic Equation model (GHE model) *For more details, please refer to the PDF materials or feel free to contact us.

  • Site and ground investigation
  • Other civil engineering services
  • Scientific Calculation and Simulation Software

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[Technical Data] ISCEF Fiber Element

[Technical Data] ISCEF Fiber Element

I will explain in detail about fiber elements, which are elements that represent cross-sectional shapes, using diagrams.

This technical document introduces the ISCEF fiber element. The fiber element is a type of element that represents the cross-sectional shape using a collection of fibers, each defined by material properties Ei, νi, yi, area Ai, and coordinates (yi, zi). Additionally, since it is possible to define material properties and nonlinear conditions for each fiber, it is effective for the analysis of RC structures and similar applications. [Contents] ■1. Fiber Element Model ■2. Nonlinear Model *For more details, please refer to the PDF document or feel free to contact us.

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ISCEF Utilization Case / Gate and Sluice Analysis

ISCEF Utilization Case / Gate and Sluice Analysis

Creation of gate models, analysis, post-processing such as plasticity checks and buckling checks! We will introduce examples of the use of the structural analysis software ISCEF, suitable for large-scale structures.

We would like to introduce a case study on the use of the structural analysis software 'ISCEF', suitable for civil structures. As an ancillary facility of a dam, gates play a significant role in ensuring the safety of the downstream area. Therefore, gates must be designed to withstand major earthquakes without being destroyed, and finite element analysis is an effective method for verifying this. Our company undertakes a series of tasks related to gate analysis, including model creation, analysis, post-processing such as plasticity checks and buckling checks. [Gate Analysis] ■ Eigenvalue Analysis ■ Static and Dynamic Analysis ■ Plasticity and Buckling Checks *For more details, please refer to the PDF document or feel free to contact us.

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Application examples / Gate post analysis * Model creation (M-Φ fiber model)

Application examples / Gate post analysis * Model creation (M-Φ fiber model)

Static and dynamic analysis of important related structures of dams, such as gate pillars and weirs! Structural analysis software 'ISCEF' suitable for civil engineering structures.

We will introduce a case study on the use of the structural analysis software 'ISCEF', which is suitable for civil structures. The gate post is the part that serves as the pillar for the gate and the superstructure. If the gate post itself is damaged, it will become impossible to open and close the gate, leading to an inability to adjust the water level, which in the worst case could result in the collapse of the dam. Therefore, improvements in seismic resistance are required for this important related structure of the dam. Our company undertakes tasks such as creating models of the gate post (M-Φ model, fiber model), capacity-based horizontal resistance method, and dynamic analysis. [Gate Post Analysis] ■ Eigenvalue Analysis ■ Static and Dynamic Analysis *For more details, please refer to the PDF document or feel free to contact us.

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Contracted Analysis Services for Structures and Ground

Contracted Analysis Services for Structures and Ground

Numerous achievements in dam gates, tunnels, water intake towers, and steel structures. We offer materials showcasing examples of adoption and analysis!

Our company offers a "Contract Analysis Service for Structures and Ground" using the finite element method. We can also support analyses using our proprietary software "ISCEF," as well as "Abaqus" and "Nastran." We have a wealth of experience with clients from government agencies, independent administrative institutions, educational institutions, general contractors, and civil engineering consultants. 【Functions of the Structural Analysis Software "ISCEF"】 - 3D analysis / 2D analysis / frame analysis - Static analysis / dynamic analysis / eigenvalue analysis - Time history response analysis / frequency response analysis - Linear analysis / nonlinear analysis (concrete [unreinforced, reinforced], steel materials, ground, contact problems) - Safety evaluation support functions (stress calculation, buckling calculation, stability calculation) 【Achievements with Abaqus】 - Elasto-plastic large deformation analysis of steel girders - Seismic evaluation of road signs - Tunnel excavation analysis - Load capacity evaluation of grout joints in monopiles - Impact simulation of steel columns ★ You can view case studies of civil engineering structures analyzed using "ISCEF" by downloading the PDF. Additionally, a variety of technical materials for CAE engineers are also available!

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ISCEF (AICEF) "GUI Suitable for Civil Engineering Structural Analysis"

ISCEF (AICEF) "GUI Suitable for Civil Engineering Structural Analysis"

We provide an intuitive and user-friendly GUI that supports various civil engineering structures!

Our structural analysis software 'ISCEF' is suitable for civil engineering structures and offers an intuitive and user-friendly interface. In addition to job management for analysis, you can intuitively set load configurations, nonlinear material tables, and fluid-structure interaction mass calculation functions directly through the interface. Moreover, the viscous boundaries, which are essential during dynamic analysis, can be automatically created with simple settings. The software is equipped with unique features particularly suited for the dam and ground fields. 【Features】 ■ Load setting functions (uplift pressure, Westergaard, Zanger, etc.) ■ Nonlinear material table input ■ Viscous boundary surface creation function based on the virtual work principle considering notch forces *For more details, please refer to the PDF materials or feel free to contact us.

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ISCEF "Slip Stability Analysis"

ISCEF "Slip Stability Analysis"

Supports both the Newmark method and the Watanabe-Baba method! Can calculate safety factors and slip displacement amounts.

The structural analysis software 'ISCEF' suitable for civil engineering structures, which we handle, allows you to set strength constants and arc shapes to determine safety factors and slip displacement amounts. Arc information can be visually created by setting material property values (compatible with both the Cφ method and the Ab method) and calculation conditions (with or without water level) from the interface. Additionally, not only specified arcs but also arbitrary arcs can be set, allowing for the determination of the maximum slip arc. It supports both the Newmark method and the Watanabe-Baba method, and simultaneous calculations are also possible. 【Features】 ■ Ability to set strength constants and arc shapes to determine safety factors and slip displacement amounts (arc shapes can be set as both specified and arbitrary arcs) ■ Compatible with both the Newmark method and the Watanabe-Baba method ■ Simultaneous calculations possible *For more details, please refer to the PDF document or feel free to contact us.

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ISCEF "Crack Tracking Function"

ISCEF "Crack Tracking Function"

Trackable concrete crack propagation! Non-orthogonal fixed models are also available.

Our structural analysis software 'ISCEF' suitable for civil engineering structures allows tracking of concrete crack propagation using a distributed cracking model. In addition to the orthogonal fixed model, it also includes a non-orthogonal fixed model. The non-orthogonal fixed model can track tensile and compressive failure considering the nonlinearity of reinforcement. 【Features】 ■ Various stress-strain softening tables can be set (single linear, two linear, multi-linear) ■ Damping considering the stiffness reduction of crack initiation elements ■ Decay settings for each material property *For more details, please refer to the PDF document or feel free to contact us.

  • Site and ground investigation
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  • Scientific Calculation and Simulation Software

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ISCEF (AICEF) "Diverse Contact Conditions"

ISCEF (AICEF) "Diverse Contact Conditions"

Equipped with a variety of contact condition functions! Shear force transmission conditions can also be defined with a single switch.

Our structural analysis software 'ISCEF' suitable for civil engineering structures allows for easy setting of various contact conditions to reproduce real phenomena. For example, even in the case of an opening like the joint of a dam with a shear key, the conditions for transmitting shear force can be defined with the push of a button. Additionally, it addresses various issues such as models that soften shear strength after debonding and shear failure, and maximum shear evaluation models. 【Features】 ■ Easy setting of contact conditions ■ Conditions for transmitting shear force can be defined with the push of a button ■ Addresses various issues such as models that soften shear strength and maximum shear evaluation models *For more details, please refer to the PDF document or feel free to contact us.

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