INFLUENCE OF TYPE OF FIT ON STRENGTH ANDDEFORMATION OF OVAL TENON-MORTISE JOINT

摘要

Only a few studies were found in which joints are taken into consideration while analyzing spatial furniture by usage of finite element method. This paper presents results of effects of type of fit on strength of oval tenon-mortise. When calculation are to be made in solid-mechanics, specific input parameters must be defined. In most modern finite element software's Young's modulus of elasticity is one of the basic data. The type of strain, which is result of the fit with splice, has impact on the changes in the Young's modulus of elasticity, which is the basic parameter in the defining of the material of the model. Aim of this study is to define rate of deformation of oval tenon-mortise joint as a result of fitting influence. Type and size of strains which occur in a joint in case of the fit with splice were examined with templates which were set on a joint. Based on this study results, the type of fit has influence on strength of the joints. In the presence of the fit with splice, a permanent change in the dimensions of the plug and hole will occur. During joining of joints with a splice fit, most strains belong to the group of elastic strains, which by all means contributes to the joint strength.