Implementation and Validation of the Johnson （约翰逊的实现和验证）.pdf

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Implementation and Validation of the Johnson （约翰逊的实现和验证）.pdf

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Implementation and Validation of the Johnson （约翰逊的实现和验证）

th 4 European LS-DYNA Users Conference Material I Implementation and Validation of the Johnson-Holmquist Ceramic Material Model in LS-Dyna Authors: Duane S. Cronin*, Khahn Bui**, Christian Kaufmann* Grant McIntosh***, Todd Berstad** *University of Waterloo, Ontario, Canada ** LSTC, California, United States *** DRDC Valcartier, Quebec, Canada Correspondence: Duane Cronin Department of Mechanical Engineering University of Waterloo, Waterloo, Ontario N2L 3G1 Canada Tel: 519-888-4567 x2682 Fax: 519-888-6197 e-mail: dscronin@uwaterloo.ca Keywords: Ceramic, Constitutive model, Ballistic impact D – I - 47 th Material I 4 European LS-DYNA Users Conference ABSTRACT Ceramic materials are commonly used in protective armour applications and may be subject to high-energy ballistic impacts in these situations. Under simple loading conditions, ceramics may be regarded as elastic-brittle materials. However, when considering ballistic impacts, the post-yield response of the ceramic becomes significant. One of the most widely used constitutive models for simulating the post- yield respons