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A cumulative damage model for bone fracture
Author(s) -
Carter D. R.,
Caler W. E.
Publication year - 1985
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.1100030110
Subject(s) - fracture (geology) , creep , compression (physics) , ultimate tensile strength , materials science , monotonic function , tension (geology) , structural engineering , constant (computer programming) , stress (linguistics) , composite material , fracture mechanics , mathematics , computer science , engineering , mathematical analysis , linguistics , philosophy , programming language
A mathematical model is presented to describe the combined time‐dependent and cycle‐dependent fracture characteristics of devitalized cortical bone. Failure is interpreted based on a linear‐life fraction rule, which accounts for cumulative creep and fatigue damage under arbitrary loading histories. The model is successful in describing the influence of loading rate on monotonic tensile strength, the time to failure in constant stress creep‐fracture tests, and bone fracture in zero‐tension and tension‐compression cyclic loading. The possible implications of the model to in vivo bone fracture, deformity, and remodelling in response to various loading histories are considered.