Renault Nissan Technology & Business Centre India Junior Engineer Interview Questions and Answers

CONTACT Automatic General is used for automatic generalization of contacts in CAD software.

• Automatically generalizes contacts between different components in CAD designs

• Helps in ensuring proper fit and alignment of components

• Reduces manual effort in adjusting contacts between components

• Improves overall design efficiency and accuracy

Material models in LS Dyna are used to simulate the behavior of different materials under various loading conditions.

• Material models define how a material responds to stress, strain, temperature, and other factors.

• Examples of material models in LS Dyna include MAT_024 (linear elastic), MAT_024 (plasticity), MAT_024 (viscoelastic), MAT_024 (hyperelastic), etc.

Some other contact models available in Dyna are penalty-based contact, kinematic contact, and contact stabilization.

• Penalty-based contact model is used for simulating contact between deformable bodies.

• Kinematic contact model is used for modeling contact between rigid bodies.

• Contact stabilization is used for improving the stability of contact simulations.

Stress is the internal force per unit area within a material, while pressure is the external force per unit area exerted on a surface.

• Stress is a measure of the internal forces within a material, while pressure is a measure of the external forces acting on a surface.

• Stress is a scalar quantity, while pressure is a vector quantity.

• Stress is measured in units of force per unit area, while pressure is measured in units of...read more