Propagation of continuum damage in a viscoelastic ice bar

Journal Article · Sun May 01 04:00:00 EDT 1994 · Journal of Offshore Mechanics and Arctic Engineering; (United States)

DOI:https://doi.org/10.1115/1.2920130· OSTI ID:7235093

Shin, J G ^[1]; Karr, D G ^[2]

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1. Seoul National Univ. (Korea, Republic of). Dept. of Naval Architecture and Ocean Engineering
2. Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Naval Architecture and Marine Engineering

An initial value problem of a semi-infinite nonlinear viscoelastic bar is solved with continuum damage evolution. The evolution law of the continuum damage for a viscoelastic material is used in order to explore the propagation of two crushing mechanisms: grain boundary cracking and transgranular cracking. Using the method of characteristics, the speed of propagation is found to be dependent on the continuum damage. On the wave front, the delayed elastic strain is zero, and only the continuum damage due to the transgranular cracking evolves. A finite difference method is developed to solve the governing equations on the obtained characteristic lines, and gives a stable solution for the propagation of the stress, strain, and damage. Numerical results are obtained and discussed using the material properties of polycrystalline ice.

• OSTI ID: 7235093
• Journal Information: Journal of Offshore Mechanics and Arctic Engineering; (United States), Journal Name: Journal of Offshore Mechanics and Arctic Engineering; (United States) Vol. 116:2; ISSN 0892-7219; ISSN JMOEEX
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500 -- Engineering-- Materials Testing
423000* -- Engineering-- Marine Engineering-- (1980-)
ARCTIC REGIONS
CRYOSPHERE
DAMAGE
FUNCTIONS
IMPACT TESTS
MATERIALS TESTING
MECHANICAL TESTS
OFFSHORE PLATFORMS
POLAR REGIONS
RESPONSE FUNCTIONS
STRESS ANALYSIS
TESTING