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一 靜力剛度 (1)靜力剛度的一般概念靜力剛度的基本概念,依照Krug博士的建議为: 剛度=載荷数值/变形数值……………………(1) (2)静力的抗拉(压)剛度、抗挠剛度、及抗扭剛度 (1)抗拉(压)剛度材料力学中拉伸基本公式σ=P/Q,ε=Δl/l σ=Eεσ=正应力,式中:σ=正应力, P=使樑拉伸或压縮之力, l=樑之原長, Δl=樑之絕对伸長, ε=樑之相对伸長, Q=面積, E=彈性模數。从基本概念及以上方程式,可得抗拉(压)剛度方程式(图一): R_2=P/Δl=EQ/l……………(2)樑的抗拉(压)的刚度与樑之断面積和樑材料
Static Stiffness (1) General Concepts of Static Stiffness The basic concept of static stiffness, according to Dr. Krug’s advice, is: Stiffness = Load Value / Deformation Value ........................ (1) (2) Static Force Tensile Stiffness, Flexural Stiffness, and Torsional Stiffness (1) Tensile (Compressive) Stiffness The basic formula for tensile in material mechanics σ = P / Q, ε = Δl / l σ = Eεσ = normal stress, Where: σ = normal stress, P = force to stretch or compress the beam, l = original length of the beam, Δl = absolute elongation of the beam, ε = relative elongation of the beam, Q = area, E = modulus of elasticity number. From the basic concepts and the above equation, available tensile (pressure) stiffness equation (Figure 1): R_2 = P / Δl = EQ / l ............... (2) Beam tensile (pressure) Sectional area and beam material