The general theoretical framework for modeling the plastic flow at finite strain is reconsidered. The Eckard-Mandel concept of multiplicative decomposition of the total deformation tensor is used together with the logarithmic elastic strain measure as external state variable. The rate constitutive relations...
Hence, for a proper comparison of different orthotropic shells to an isotropic one, an intrinsic parameter has to be employed which would remain invariant; the parameter chosen is the stored elastic energy. For an orthotropic shell with a stress-strain relationship as in equation (M.1) and Q16...
Then, we arrive at the stiffness coefficients and elastic constants B¯11=46.98GPa,B¯12=14.3GPa,B¯22=49.39GPaEx=42.83GPa,νyx=0.29 Comparing Ex with Eq. (3.116), we can conclude that the first ply failure reduces the laminate stiffness. For σx≥σx*, the strains can be found ...
-phase in Ti-6Al-4V15and aluminum alloys22. These microstructures cause a pronounced anisotropy,i.e. an orientation-dependent elastic as well as plastic deformation behavior. Furthermore, deformation mechanisms like deformation-twinning are sensitive to crystallographic orientation23. These findings were ...
To ensure that the method works as required in the linear elastic range and that no plastic deformation occurred, the maximum stresses of the hybrid structure (see Fig. 14c) was evaluated. The max. stress values are considerably lower than the yield point of even a mild steel (for example ...
Nonetheless, due to delayed breakage such as creep failure or limited plastic effects corresponding to softening at the contact, stiffness of strong force chains is not permanent. An abrupt de-stabilisation of the concentrated force chains may occur when some of the strongly loaded contacts within ...
Additive manufacturing of defect-free TiZrNbTa refractory high-entropy alloy with enhanced elastic isotropy via in-situ alloying of elemental powders Article Open access 16 February 2024 Localised control of phase formation in a high-carbon low alloy steel by laser powder bed fusion Article Open...
The stiffness is typically characterized in terms of elastic constants derived from the low-strain linear response to applied stresses. On the other hand, solid specimens tend to show strongly nonlinear behavior at high strains, culminating in either yielding or catastrophic failure, so that there ...
For truss lattices with ρ*<ρcr*, the macroscopic limit of the linear-elastic domain will be set by elastic buckling failure at the mesostructural level. Due to the high number of rods intersecting at a single node, the pre-factor β is chosen to be 0.5, which corresponds to fully-...
4) elastic plastic near-tip field 弹塑性裂纹尖端场5) crack tip stress singularity 裂纹尖端应力奇异性6) stress intensity factor at the tip of crack 裂纹尖端应力强度因子 例句>> 补充资料:裂纹尖端张开位移 分子式:CAS号:性质:在外载荷的作用下,裂纹尖端两表面间的张开位移。用符号δ表示。由于在弹...