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同济大学航空航天与力学学院仲政和赵金峰等在固体力学著名期刊“Journal of the Mechanics and Physics of Solids”上发表论文（图）
固体力学 弹性波宽频 超高能量密度 超分辨率聚焦
2021/3/30
近日，我校航空航天与力学学院仲政教授和赵金峰副教授与多家单位联合，在国际固体力学权威期刊“Journal of the Mechanics and Physics of Solids”（《固体力学与固体物理学杂志》）上发文，首次在实验和理论上实现了弹性波宽频和超高能量密度的超分辨率聚焦。超分辨率聚焦的典型特征是半宽比（FWHM）小于0.5倍波长λ0。现有研究中，负折射透镜、超分辨率透镜、超表面等结...
Dynamics of unsaturated poroelastic solids at finite strain
unsaturated media porous media finite strain finite element method
2015/7/1
We derive the governing equations for the dynamic response of unsaturated poroelastic solids at finite strain. We obtain simplified governing equations from the complete coupled formulation by neglect...
Computational Aspects of Elasto-Plastic Deformation in Polycrystalline Solids
Computational Aspects Elasto-Plastic Deformation Polycrystalline Solids
2015/7/1
The overall elasto-plastic behavior of single crystals is governed by individual slips on crystallographic planes, which occur when the resolved shear stress on a critical slip system reaches a certai...
Conditions for instabilities in collapsible solids including volume implosion and compaction banding
Compaction band Deformation band Material instability Volume implosion
2015/7/1
We review conditions for material instabilities in porous solids induced by a bifurcation of solution into non-unique strain rate fields. Bifurcation modes considered include jumps in the strain rate ...
Bifurcation of elastoplastic solids to shear band mode at finite strain
Bifurcation Elastoplastic solids Shear bond mode Finite strain
2015/7/1
This paper formulates and implements a finite deformation theory of bifurcation of elastoplastic solids to planar bands within the framework of multiplicative plasticity. Conditions for the onset of s...
Generalized Mindlin's method for the determination of constitutive equations of solids
Lagrange’s derivative evolution equation Lagrange’s derivative with condition constitutive equation
2010/3/12
For solid bodies the principle of virtual work can often be written as the variation of a functional. This fact can be applied to determine constitutive equations. Mindlin utilized this idea in the de...
Rate and state dependent friction and the stability of sliding between elastically deformable solids
Tribology B.Contact mechanics B.Friction B.Geological materials C.Stability and bifurcation
2014/4/8
We study the stability of steady sliding between elastically deformable continua using rate and state dependent friction laws.That is done for both elastically identical and elastically dissimilar sol...