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[Case Study] Heat Transfer and Thermal Stress Analysis - Casting Cooling Simulation

[Case Study] Heat Transfer and Thermal Stress Analysis - Casting Cooling Simulation

Efficiently perform analysis by conducting thermal stress analysis with Nastran!!!

◆◆Publication Content◆◆ ○Casting cooling simulation using heat transfer and thermal stress analysis (NX Nastran SOL 159/SOL 601) ○Keywords: Nonlinear thermal stress analysis, casting heat transfer, cooling rate, residual stress, shrinkage cavity, solidification shrinkage cavity ○Case Overview ●For other features and details, please download the catalog.

  • Scientific Calculation and Simulation Software

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[Example] Acoustic analysis of an audio room

[Example] Acoustic analysis of an audio room

I calculated the standing waves in a rectangular room and determined the frequency characteristics of the sound driven by a point source.

【Case Overview】 ■Product Name: NX Nastran ■Analysis: Modal Analysis and Frequency Response Analysis ■Industry: Architecture Indoor acoustic characteristics are very complex, and the influence of standing waves on acoustic properties is significant. The acoustic analysis in NX Nastran is a fluid-structure interaction analysis that examines the vibrations within a container filled with fluid. In this analysis, the standing waves in a rectangular room were calculated, and the frequency characteristics of the acoustics driven by a point sound source were determined. *Note 1: Nastran includes elements for sound absorption and damping (acoustic absorbers/acoustic barriers), but this analysis does not take them into account. The walls of the room are considered to be perfect reflectors. □For other functions and details, please refer to the catalog.

  • Scientific Calculation and Simulation Software

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[Example] Rotor Dynamics

[Example] Rotor Dynamics

Introducing the rotational system analysis capabilities of NX Nastran!!!

【Case Summary】 ■Product Name: NX Nastran ■Analysis: Modal Analysis, Linear Transient Analysis, Frequency Response Analysis ■Industry: Mechanical Components Stable operation is extremely important for various rotating machinery such as turbines, jet engines, generators, fluid equipment, and electrical products, and vibration prevention is an essential challenge. This example introduces the rotating system analysis capabilities of NX Nastran using a representative model of rotor dynamics. □For other features and details, please refer to the catalog.

  • Prime movers, torque converters, hydraulic equipment, generators

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[Example] Analysis of Aluminum Frame Structure

[Example] Analysis of Aluminum Frame Structure

Automatically calculate beam cross-section performance from CAD data!!!

【Case Summary】 ■Product Name: NX Nastran ■Industry: Architecture Using high-rigidity lightweight aluminum extrusion materials, various frame structures can be assembled. When designing these structures, it is necessary to investigate the deformations, stresses, and vibration characteristics that occur during use to ensure functionality and safety. In FEM analysis of frame structures, it is common to model them using beam elements; however, the cross-section of aluminum extrusion materials is complex, and traditional beam element outputs cannot display the characteristics of detailed sections. On the other hand, modeling thin-walled structures with solid elements is challenging, and creating high-quality meshes results in large models that require substantial computational resources and high-performance post-processing. This example introduces the applicability of Femap with NX Nastran for such analyses. ◎ For more detailed information, please refer to the catalog or contact us directly.

  • Architectural CAD

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Automotive Analysis Case Studies

Automotive Analysis Case Studies

Collection of automotive-related analysis cases!! There are various examples, so please take a look.

This is a collection of analysis cases including shape optimization analysis, nonlinear transient analysis of brake rotors, pressure distribution analysis of brake pads, and behavior analysis of diaphragm springs through nonlinear static analysis. Additionally, there are analysis cases not included in the collection, so please contact us if you are interested in any specific analysis case.

  • Scientific Calculation and Simulation Software

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[Example] External Super Element 1

[Example] External Super Element 1

Reduction of analysis costs, enhancement of information security!!!

【Case Overview】 ■Product Name: NX Nastran There has been an image that Super Elements (SE) are only applicable in the aerospace and automotive fields and can only be used by a limited number of analysis specialists. There has been no pre- and post-processing tool that fully supports SE analysis, and the data creation process has been complicated, which has hindered its widespread adoption until now. Femap has started to support external Super Elements for Nastran from version 11. In this case study, we will use an assembly model from the Femap example collection to demonstrate that SE analysis can be used by anyone with Femap v11.

  • Scientific Calculation and Simulation Software

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[Example] Free Surface Motion Simulation

[Example] Free Surface Motion Simulation

Analysis of the sloshing phenomenon when the bottom of the tank is excited horizontally using the virtual fluid boundary and phantom elements of NX Nastran.

【Case Overview】 Containers for storing liquids, such as water tanks and oil tanks, experience a sloshing phenomenon where the free surface of the liquid inside the container oscillates at relatively low frequencies when subjected to vibrations. In this analysis, we utilized the virtual fluid boundary and phantom elements of NX Nastran to analyze the characteristics when the bottom of the tank is excited in the horizontal direction. *Note: Fluid can be modeled without creating elements.* □ For other functions and details, please refer to the catalog.

  • others

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[Case Study] Buckling Analysis of Thin-Walled Frame Structures

[Case Study] Buckling Analysis of Thin-Walled Frame Structures

We performed advanced nonlinear analysis using NX Nastran for the elastic-plastic buckling problem of frame structures.

【Case Summary】 ■Product Name: NX Nastran ■Analysis: Nonlinear Static Analysis ■Industry: Mechanical Components Buckling is a deformation that exhibits very strong nonlinear characteristics. When buckling occurs, the strength and stiffness of the structure decrease sharply, leading to instability. Thin-walled frame structures, like the one shown on the right, have many failure modes, and buckling can cause extremely large deflections in the frame. Since part of the model may return from an elastic state to a plastic state and vice versa, the analysis becomes quite complex. This analysis example presents the results of advanced nonlinear analysis using NX Nastran for the elasto-plastic buckling problem of frame structures. □ For other features and details, please refer to the catalog.

  • Scientific Calculation and Simulation Software

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[Example] Optimization of Golf Club Heads

[Example] Optimization of Golf Club Heads

Analysis of golf club heads using optimization!!!

It is ideal for the characteristics of the golf club head to match the characteristics of the golfer, allowing for maximum performance of its capabilities. In this case, the key indicator is the initial ball speed at impact. In this example, we determined the optimal face thickness and shaft stiffness that maximize the initial speed under defined loading conditions (average golfer's power) using optimization methods. We created a process using ModelCenter, an optimization support tool, to analyze the impact of face structure and shaft stiffness on initial speed. This enabled us to examine the influence of each parameter and seek the optimal golf club characteristics. For more detailed information, please refer to the catalog or contact us directly.

  • Scientific Calculation and Simulation Software

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Railway and Shipping Related Analysis Case Studies

Railway and Shipping Related Analysis Case Studies

A collection of analysis examples related to railways and shipping! There are various cases, so please take a look.

This is a collection of analysis examples including model analysis of railway vehicles, sloshing analysis of ships, airflow analysis within railway vehicles, large-scale finite element analysis of train vehicle dynamics, and hull strength analysis. Additionally, there are analysis cases not included in the collection, so please contact us if you are interested in any specific analysis case.

  • Scientific Calculation and Simulation Software

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[Analysis Case] Analysis of the Stray Losses in Power Transformers

[Analysis Case] Analysis of the Stray Losses in Power Transformers

Analyze the stray load loss under the condition of the presence or absence of leakage flux blocking components in the transcoil!

We would like to introduce the "Analysis of Power Transformer Leakage Loss" conducted by our company. The analysis mode is frequency response analysis (Time Harmonic), and the rated power of the power transformer is 100 MVA. The input frequency is 50 Hz/AC. As a result of the analysis, it was found that the leakage magnetic flux generated from the transformer coil is being significantly and widely collected at the shunt wall. 【Analysis Conditions】 ■ Analysis Mode: Frequency Response Analysis (Time Harmonic) ■ Power Transformer Rating: 100 MVA ■ Input Frequency: 50 Hz/AC ■ Shunt Wall (Flux Collector): Magnetic Material ■ Frame Material, Tank Material: Carbon Steel *Details of the case can be viewed through the related links. For more information, please feel free to contact us.

  • Analysis and prediction system

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