A Dynamic Crack Growth Simulation Using Cohesive Elements [chapter]

M. Anvari, C. Thaulow
Fracture of Nano and Engineering Materials and Structures  
Rate-sensitive and triaxiality-dependent cohesive elements are used to simulate crack growth under dynamic loading conditions. To consider the effect of stress triaxiality and strain rate on the cohesive properties, a single plane strain element obeying the constitutive equations of a rate-dependent Gurson type model has been used. The single element is loaded under various stress biaxiality ratios and strain rates and the obtained stress-displacement curves are considered as traction
more » ... traction separation law for the cohesive elements. These curves are used for analyzing a middle-cracked tension M(T) specimen made of aluminum alloy 6XXX series. The effects of constraint and strain rate on the energy absorption of the specimen and crack growth are discussed.
doi:10.1007/1-4020-4972-2_481 fatcat:cvzsx3zbojhg7iljy4gfbsggv4