It dwells here upon the constitutive model of tlastic creep damage of heat resistant steel , establishing a corresponding variation principle and finite element discretization form , thus introducing complete numerical variational methods 主要提出耐熱鋼的彈性蠕變損傷本構模型,建立起相應的數值變分原理以及有限元離散化形式,從而形成完整的數值變分方法。
Using the approximation form of lumped mass matrix instead of the mass matrix in finite element discretization in space , backward differencing scheme in time , an implicit computational scheme is yielded , it proved the convergence estimate for this implicit scheme 對有限元離散中引起較大誤差的質量矩陣,采用了近似形式的集總質量矩陣來代替,時間項采用向后差分,得到了一個隱式的計算格式,證明了計算格式的收斂性及其收斂速度估計。