[Structural Analysis Example] Collision Analysis Side Crash of a Car

For drop and impact analysis, we introduce the concept of "impact force considering the propagation of stress waves" for analytical calculations!

In considering shock analysis, there are (1) shock forces derived from absorbed energy, (2) shock forces derived from the equations of motion of rigid bodies, and (3) shock forces derived from the propagation of stress waves. (1) refers to the stress at the maximum deformation displacement when the deformable body is impacted. (2) is determined from the equilibrium of the inertial force of the colliding object (rigid body) and the reaction force from the deformable body, while (3) introduces the concept of stress waves. In 'LS-DYNA', the approach of (3) is incorporated for analysis calculations in drop and impact analysis. [Overview] ■ (1) Shock forces derived from absorbed energy - The stress is considered at the maximum deformation displacement when the deformable body is impacted. - It is assumed to occur not at the moment of impact, but when the deformation of the deformable body reaches its maximum after the impact. *For more details, please refer to the related links or feel free to contact us.

Structural Analysis