[Example] Linear static analysis considering initial bolt load

Linear static analysis using beam elements and bar elements for bolt connection parts!!!

**Case Summary** ■Product Name: NX Nastran ■Industry: Mechanical Components NX Nastran allows for various analyses considering pre-tensioned bolts (linear static analysis, nonlinear static analysis SOL601, linear buckling analysis, etc.). Using the Femap interface, modeling of bolt connections with beam elements, bar elements, and solid elements, as well as the setting of bolt loads, can be done easily. This case modeled the bolts using bar elements and solid elements and compared the results from both methods. Two fittings with a surface static friction coefficient of 0.15 were fastened with M10 bolts. An axial force of 150 kgf was applied, with one side fixed, and a linear static analysis was performed (Figure 1). The comparison of results from the bar elements and solid elements showed that the maximum and minimum Mises stress values and the maximum and minimum displacement values for the two fittings were the same for both methods. ● For more features and details, please download the catalog.

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