Fracture simulation of partially threaded bolts under tensile loading

Failure of bolts exposed to tension is generally avoided in the design bolted connections due smaller deformation capacity than connected plates. This one reasons why few studies focus on tensile failure behaviour bolts. However, essential for advanced finite element analysis especially relevant and mode connections. paper presents a numerical study fracture partially threaded under incorporating damage models, with which mechanism can be better understood. The post-necking stress–strain relation firstly calibrated describe bolt parts at large deformation. Then, direct tests different lengths within grip are modelled using ABAQUS explicit solver. Two criteria investigated: void growth model (VGM) proposed by Bao Wierzbicki (BW). former adopted simulate latter used predict thread stripping failure. Results indicate that modes well predicted combining suitable criterion analysis. It revealed plastic strain threads introduced rolling process major reason