Lately I began to wonder why I hadn't learned how to calculate the beam shear stiffness in college. I vaguely recalled that the teacher told us the shear stiffness could be omitted in the beam calculation compared to the bending stiffness.
Can anybody show me how to calculate the shear stiffness if it is large enough and cannot be ignored? Like the example shown in the picture below
Dear Colleagues,
I wish to bring to you my recent work with my supervisor Hui-Hui Dai on "Some Analytical Formulas for the Equilibrium States of a Swollen Hydrogel Shell". Below is the abstract and attached is the preprint of the article. I will very much appreciate your comments and suggestions.
Hey to imechaica, i am doing my M.E Project in composites.i have done finite element analysis of composite plate with different boundary conditions and different orientation angle with antisymmetric stacking sequence. i absorve tip center displacement of cantilever plate is increasing with orientation angle increment and for simple supported plate it decreases.
stacking sequence is [0/-θ/θ/-θ/θ/0]
please help me to understand this.
Dear everyone:
I am trying to use a nonlocal damage criteria to simulate the crack growth, which can reduce the mesh dependency.
In abaqus, VUMAT/UMAT is doing computation at integration point for each increment, but I want to do the post-processing after each increment to get the non-local state variable and return this value back to calculation.
Looking through books and papers I see an often quoted equation to show that the contact radius (a) of spherical indenter of radius (R) is related to the indentation depth (h):
a= √(R.h)
However, using simple trigonometry of a spherical cap it can be shown that:
a=√(2Rh-h2)
Contact area is very important for use in nanoindentation - however, if it is based on the wrong contact area calculation, then more errors become apparent.
Looking through books and papers I see an often quoted equation to show that the contact radius (a) of spherical indenter of radius (R) is related to the indentation depth (h):
a= √(R.h)
However, using simple trigonometry of a spherical cap it can be shown that:
a=√(2Rh-h2)
Contact area is very important for use in nanoindentation - however, if it is based on the wrong contact area calculation, then more errors become apparent.
Forthcoming papers of International Journal of Applied Mechanics (IJAM) Vol.3 No.3
Idaho National Laboratory Research Leader and Manager, Carbon Resource Management Department The Idaho National Laboratory (INL) is seeking a highly qualified individual to lead its Carbon Resource Management Department, which is a component of the Energy Systems and Technologies Division of the INL Energy and Environmental Science and Technology Directorate.
Hi everybody,
I am anurag working on damage mechanics of 2x2 twill woven composite, i will conduct the carbon/epoxy laminates under various regimes of service loas (quasi static loading, low velocity impact, fatugue, post impact) and will also model crack propogation of the same using XFEM.I have studied FEM at graduate level.
Initially i will calculate mechanical properties of woven composite using unit cell method by applying homogenization process.
Electro-creasing instability in deformed polymers: experiment and theory
Qiming Wang, Mukarram Tahir, Lin Zhang, and Xuanhe Zhao*
Soft Matter, In Press
