Abstract
The Finite Element Method is a numerical analysis technique that has been extensively used in industry, and one specific area of development is the study of impact simulation and assessment of energy absorption capability of materials. However, the energy absorption capability is directly dependent on material ductility, so that in order to correctly predict the onset of failure it is necessary to have accurate failure criteria. The objective of this work is to study the applicability of different failure criteria available in commercial finite element codes, in the simulation of stainless steel beams under impact. Initially, material characterization was done through several experimental tests which involve tensile tests and Hopkinson Bar tests. Next, impact tests were made with clamped beams. A high speed camera was used to record the experiments, and electronic devices were built in order to synchronize experimental data with the high speed image acquisition system. All experimental tests were simulated by using Finite Element Method and simulation results were compared to the experimental ones in order to verify the accuracy of failure criteria employed.
Highlights
Study of failure in structural members under dynamic loading such as beams, plates and thin shells is of great importance in the assessment of safety and hazard in many engineering problems regarding industries like nuclear, offshore, naval and defense
These problems generally involve large inelastic deformations and damage, and different modes of failure can be attained for structural members, so that in this case beams have been studied extensively by scientists for the development of reliable methods allowing prediction of onset for different failure modes for these critical elements
The main objective of the present work is the study of applicability of the commonly used failure criteria in finite element simulations of impact phenomenon
Summary
Study of failure in structural members under dynamic loading such as beams, plates and thin shells is of great importance in the assessment of safety and hazard in many engineering problems regarding industries like nuclear, offshore, naval and defense These problems generally involve large inelastic deformations and damage, and different modes of failure can be attained for structural members, so that in this case beams have been studied extensively by scientists for the development of reliable methods allowing prediction of onset for different failure modes for these critical elements. Further studies by Liu and Jones [7] showed that two modes of failure observed in Drop Hammer experiments – tensile tearing and shear failure, the last one not necessarily near supports – depend on type of material (mainly the rupture strain), position of impact point and clamping condition Besides these failure modes, there are several studies on dynamic response of beams under impulsive loadings [1, 4 - 6, 9]
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
