Dynamic crushing characteristics of spruce wood under large deformations

Autor:	Bernhard Droste, Martin Neumann, Germar Eisenacher, Robert Scheidemann, Holger Völzke
Rok vydání:	2012
Předmět:	Materials science Force level Forestry Plant Science Industrial and Manufacturing Engineering Constraint (information theory) Stress (mechanics) Compressive strength Loading rate General Materials Science Composite material Hardening effect Displacement (fluid) Softening
Zdroj:	Wood Science and Technology. 47:369-380
ISSN:	1432-5225 0043-7719
DOI:	10.1007/s00226-012-0508-5
Popis:	An extensive series of large deformation crushing tests with spruce wood specimens was conducted. Material orientation, lateral constraint and loading rate were varied. Regarding material orientation, a reduction in the softening effect and the general force level was observed with a higher fiber-load angle. A comparison with characteristics gained by application of Hankinson’s formula showed discrepancies in compression strength and the beginning of the hardening effect. Lateral constraint of the specimens caused a multiaxial stress state in the specimens, which was quantified with the applied measuring method. Further, a higher force level compared to specimens without lateral constraint and significant hardening effect at large deformations resulted. Thus, the influence of a multiaxial stress state on the force level could be determined. An increase in the loading rate led to higher force levels at any displacement value and material orientation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d3033ca4773f9e2b0fae87c9f637d081 https://doi.org/10.1007/s00226-012-0508-5 Zobrazit plný text záznamu Full text from SpringerLink