Dynamic response of elastic-plastic structures

• Grant number: 98/02856-8
• Support Opportunities: Regular Research Grants
• Start date: July 01, 1998
• End date: March 31, 1999
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Marcílio Alves
• Grantee: Marcílio Alves
• Host Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The dynamic response of elastic-plastic structures will be studied using different material constitutive models which take into account material strain hardening and strain-rate hardening. A comparison will be drawn between the structural responses of these more sophisticated models and the ones predicted by rigid, perfectly plastic material law. This will clarify the influence of various material parameters on the dynamic response of structures, helping to establish some limits of validity for the rigid, perfectly plastic analysis. Geometrical and material nonlinearities will be taken into account. The proposed study will be carried out by numerical simulations of beams under impact loading. (AU)