In this article, we derive the intrinsic equations for a generalized relaxed elastic line on an oriented surface in the Galilean 3-dimensional space G3. These equations will give direct and more geometric approach to ...In this article, we derive the intrinsic equations for a generalized relaxed elastic line on an oriented surface in the Galilean 3-dimensional space G3. These equations will give direct and more geometric approach to questions concerning about generalized relaxed elastic lines on an oriented surface in G3.展开更多
Thermal residual stress/strain field in the vicinity of interface in the thin foil specimen of a whisker reinforced metallic composite was studied with 3--dimensional finite element method (3-D FEM) for the first time...Thermal residual stress/strain field in the vicinity of interface in the thin foil specimen of a whisker reinforced metallic composite was studied with 3--dimensional finite element method (3-D FEM) for the first time. The stress/strain distribution across the interface between the whisker and the matrix shows that the thermal stress/strain field in the matrix extends to a large area from the interface. The effect of surface relaxation on the strain/stress was investigated. The displacement field calculated with 3-D FEM was used in the simulation of LACBED pattern. Good fit was found between the simulated pattern and the experimental one.展开更多
文摘In this article, we derive the intrinsic equations for a generalized relaxed elastic line on an oriented surface in the Galilean 3-dimensional space G3. These equations will give direct and more geometric approach to questions concerning about generalized relaxed elastic lines on an oriented surface in G3.
基金the National Natural Science Foundation of China!59471070
文摘Thermal residual stress/strain field in the vicinity of interface in the thin foil specimen of a whisker reinforced metallic composite was studied with 3--dimensional finite element method (3-D FEM) for the first time. The stress/strain distribution across the interface between the whisker and the matrix shows that the thermal stress/strain field in the matrix extends to a large area from the interface. The effect of surface relaxation on the strain/stress was investigated. The displacement field calculated with 3-D FEM was used in the simulation of LACBED pattern. Good fit was found between the simulated pattern and the experimental one.
