METHOD OF DETERMINATION OF RATED STIFFNESS COEFFICIENT OF ELASTOPLASTIC CONTACT OF PART AND INDENTER OF DOUBLE CURVATURE Russian patent published in 1995 - IPC

FIELD: measurement technology. SUBSTANCE: surfaces of part and INDENTER with radius R_пр with definite geometrical parameters of roughness and elastic constants of materials are pressed against each other with preset force P, normal to plane of joint. Residual and elastic parts of full approach are found and by their sum value α of full approach in contact and coefficient j of rated contact stiffness are determined. In this case yield point s_т, temporary resistance σ_в and ultimate uniform deformation ε_р of material of part tension are determined in addition and with due account of them intensity ε_i,o of elastoplastic deformation in center of elastoplastic indentation is determined by formula with allowance for parameters specified above. EFFECT: increased precision of determination. 2 tbl