Differential Energy Criterion of Brittle Fracture as a Criterion for Wood’s Transition to the Plastic Deformation Stage

An experimental study and modeling of the behavior wood during compression along fibers was carried out. The nonlinear analytical dependence load on strain considered. Attention focused post-peak stage deformation in order to determine displacement at which transition plastic occurs. work aimed substantiating application energy criterion brittle fracture as a for deformation. To achieve this goal, methods mathematical analysis test results were used. As an upshot, simple practical procedure developed predict point above simulation consistent with laboratory tests samples fragments structures. significance lies its possible use additional tool analyzing condition some wooden Energy criteria, including one mentioned above, belong fairly universal criteria. Accordingly, research methodology can be adapted analyze of, example, composites under other types loads further studies.