Journal article
An extended state-based peridynamic model for damage growth prediction of bimaterial structures under thermomechanical loading
Engineering fracture mechanics, Vol.189, pp.81-97
02/15/2018
Handle:
https://hdl.handle.net/2376/112580
Abstract
•An extended state-based peridynamic model considering thermomechanical loading is presented.•The model is capable of dealing with 3D, and plane stress and strain cases of bimaterial structures.•Crack propagation paths in bimaterial structures under thermal, three-point bending and impact loading are predicted.
An extended ordinary state-based peridynamic model considering thermomechanical loading is presented to predict damage growth of bimaterial structures, such as cermet. In this new model, the three-dimensional (3D) and two-dimensional (2D) (both plane stress and strain) cases are all considered. As examples, 2D bimaterial beams and 3D thick plates are analyzed under thermal loading and three-point bending. m-convergence and δ-convergence are discussed in the cases of 2D verification, and comparison of displacement with finite element model shows great accuracy of the extended model. Damage growth (in term of crack propagation) of bimaterial beams due to incremental thermal loading and three-point bending is investigated. The new model successfully captures interface crack propagation in bimaterial beams under thermal loading as well as crack growth within substrate material and at bimaterial interface under quasi-static and impact loading. Distribution of elastic strain energy density is analyzed during dynamic crack propagation under impact loading.
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Details
- Title
- An extended state-based peridynamic model for damage growth prediction of bimaterial structures under thermomechanical loading
- Creators
- Heng Zhang - State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR ChinaPizhong Qiao - State Key Laboratory of Ocean Engineering, Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration, School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China
- Publication Details
- Engineering fracture mechanics, Vol.189, pp.81-97
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547855901842
- Language
- English
- Resource Type
- Journal article