khu vực, năng lượng, ma trận chuyển đổi liên tục Madelung tấm extensional cứng chiều dài, ma trận chuyển đổi, chiều dài vết nứt thời gian nhiệt độ thay đổi yếu tố thiết kế cho phép đối với ma trận sức mạnh của các chất dẫn xuất của chức năng nội suy tấm khớp nối chiều rộng độ cứng, độ dày hệ số căng thẳng quang học, | Modules in Mechanics of Materials List of Symbols A area free energy Madelung constant A transformation matrix A plate extensional stiffness a length transformation matrix crack length aT time-temperature shifting factor B design allowable for strength B matrix of derivatives of interpolation functions B plate coupling stiffness b width thickness C stress optical coefficient compliance C viscoelastic compliance operator c numerical constant length speed of light . coefficient of variation D stiffness matrix flexural rigidity of plate D plate bending stiffness d diameter distance grain size E modulus of elasticity electric field E activation energy E viscoelastic stiffness operator e electronic charge 6ij deviatoric strain F force fs form factor for shear G shear modulus G viscoelastic shear stiffness operator Gc critical strain energy release rate g acceleration of gravity GF gage factor for strain gages H Brinell hardness h depth of beam I moment of inertia stress invariant I identity matrix J polar moment of inertia K bulk modulus global stiffness matrix stress intensity factor K viscoelastic bulk stiffness operator k spring stiffness element stiffness shear yield stress Boltzman s constant L length beam span L matrix of differential operators 1 M bending moment N crosslink or segment density moire fringe number interpolation function cycles to failure N traction per unit width on plate Na Avogadro s number N viscoelastic Poisson operator n refractive index number of fatigue cycles n unit normal vector P concentrated force Pf fracture load probability of failure Ps probability of survival p pressure moire gridline spacing Q force resultant first moment of area q distributed load R radius reaction force strain or stress rate gas constant electrical resistance R Reuter s matrix r radius area reduction ratio S entropy moire fringe spacing total surface energy alternating stress 5 compliance matrix s Laplace variable standard deviation SCF stress concentration .
