Mechanical Properties of Wood 木材的力学性质
木材流变学rheology of wood
弹性elasticity 塑性plasticity 弹性模量modulus of elasticity
蠕变creep 蠕变恢复creep recovery
应变strain 应力stress 应力—应变曲线stress-strain curve 分应力stress component 分应变strain component 应力松驰stress relaxation 松弛失效failure by relaxation
疲劳fatigue 刚性模量modulus of rigidity 变形deformation 载荷loading
各向异性anisotropy 正交对称性rhombic symmetry 弹性形变elastic deformation 弹性常数elastic constant 木材弹性异向性the anisotropic elasticity of wood 对称轴axis of symmetry
柔度compliance 泊松比Poisson’s ratio 压缩系数compressibility 体积模量bulk modulus 理想弹性变形ideal elastic deformation 粘滞流动形变viscous flow deformation 木材硬度hardness of wood 屈服点yield point
拉伸tension 压缩compression 弯曲bending 木材冲击韧性toughness of wood 木材抗劈强度cleavage strength of wood 木材抗弯强度bending strength of wood 木材静曲弹性模量the modulus of elasticity in static bending of wood 木材顺纹抗剪强度shearing strength parallel to grain of wood 木材顺纹抗拉强度tensile strength parallel to grain of wood 木材顺纹抗压强度compressive strength parallel to grain of wood 木材横纹压力compression perpendicular to grain of wood 木材横纹抗压弹性模量modulus of elasticity in compression perpendicular to grain of wood
静力试验测定determination by static test 动态试验测定determination by dynamic test
木材断裂力学Fracture Mechanics of Wood 断裂韧性Fracture Toughness 裂纹shake(check) 径裂heart shake 轮裂ring shake 环裂round shake 弧裂cup shake 冻裂frost crack 干裂drying shake 贯通裂through shake
脆性破碎(brittle/brash fracture): 又称做胡萝卜破碎。破碎的表面很象新鲜的胡萝卜表面的破裂。
裂片状破splintering fracture 略脆的破碎brittish fracture 剪切破坏shear failure 疲劳破坏failure due to fatigue
弯曲curvature 斜纹cross grain 翘曲distortion(warp) 顺弯bow(camber) 横弯crook 扭曲twisting 纹理方向grain orientation
应力木reaction wood 应压木compression wood 应拉木tension wood
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