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Problem Specification

One of the important measure in race car design is torsional stiffness. To obtain that specification, a twist test must be performed on the Chassis. Here is a simplified version of race car chassis with a composite monocoque and two front suspension links. To simulate a twist test, the back of the monocoque will be fixed while coupling will be applied tot he end of the two front suspension. the .igs file for the geometry can be monocoque.IGS

Geometry Specification

One of the beauty of composite material is to customize the ply lay-ups to achieve optimum proeperties according to the needs. It is often the case where different ply lay-ups are used at different monocoque regions for their sepecific needs. This excise have 4 different regions as shown in diagram below:

Detail of composite layup will be explain during the excercise.

Calculate the Torsional Stiffness

Ansys gives tengential displacement values for torsional displacement, and here are the equations to calculate the torsional stiffness

Go to Step 1 - Pre-Analysis & Start-Up
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