Solid Mechanics

Solid mechanics is the branch of mechanics, physics, and mathematics that concerns the behavior of solid matter under external actions (e.g.,... | Contact experts in Solid Mechanics to get answers

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Questions related to Solid Mechanics

What is the function space for pressure field in the Q2-P1 element?

Q2-P1 is one of the widely-used mixed elements for Stokes flow, and to a little extent for solid mechanics. What is the function space of the basis functions for the pressure field for this Q2-P1...

22 July 2020 3,789 4 View

Regarding COMSOL simple solid mechanics: Please help me out?

Q1. when I strain a soft and hard material together under a force suppose 50 N and then strain under 0.5 N. the strain value does not change much? how is this happening? as in the real world, the...

10 July 2020 9,597 8 View

Why the material time derivative of a material field 𝐹 equals to the directional derivative of 𝐹 in the direction of the velocity vector 𝑣 ?

Hi guys! I am recently reading Nonlinear Solid Mechanics A Continuum Approach for Engineering by Gerhard A. Holzapfel, Chapter 2.3 and was confused with one equation. You can refer to this...

27 June 2020 5,327 2 View

Is it possible to couple fluid flow, heat transfer, phase change and mechanical stresses on the solidifying shell using COMSOL Multiphysics?

I am trying to simulate DC Casting of Aluminum Alloys in Comsol. I found an example related to Continuous Casting that it couples fluid flow, heat transfer and phase change during solidification...

29 March 2020 3,229 4 View

What are the challenges and/or pros and cons of designing any rebar-element in Abaqus(or any similar FEM-software), as SOLID-element or WIRE-element?

Regarding modelling any reinforced concrete solid element (i.e. a R.C.Beam, R.C.Column, shear-wall, etc.) in the commercial Finite Element program Abaqus FEA (and/or any similar...

24 March 2020 526 3 View

Is there an analytical torsional rigidity equation for a three layer isotropic beam?

I'm looking for the torsional rigidity of a three layer isotropic beam like the one seen in the figure. I looked at Muskhelishvili's book from 1963, but that solution is only for a two layer...

09 March 2020 1,991 6 View

In comsol is it possible to set a BC for a couple of seconds and then release it?

As states i am running a time-dependent simulation in solid mechanics. I want to set a prescribed displacement to zero for the first 0.05s and then release it to free. Is there any way that I can...

24 February 2020 7,254 3 View

In comsol is it possible to set a BC for a couple of seconds and then release it?

As states i am running a time-dependent simulation in solid mechanics. I want to set a prescribed displacement to zero for the first 0.05s and then release it to free. Is there any way that I can...

02 February 2020 10,120 3 View

How to define a viscoelastic material in COMSOL ?

nnow we have DMA test data of our sample PPS material and the storage module and loss module are so so calculated , but how to define our PPS material in some FEM tools...

28 December 2019 1,569 4 View

How to define a viscoelastic material in COMSOL ?

nnow we have DMA test data of our sample PPS material and the storage module and loss module are so so calculated , but how to define our PPS material in some FEM tools...

12 December 2019 6,940 4 View

Do stiff mechanical systems (e.g. rock) react faster on stress rate changes than soft systems (e.g. soil)?

I have a rock specimen and a soil specimen. During my mechanical measurements I observed that the rock reacts much faster on stress rate changes (observable by a sharp kink in the deformation...

10 October 2019 4,798 3 View

Do stiff mechanical systems (e.g. rock) react faster on stress rate changes than soft systems (e.g. soil)?

I have a rock specimen and a soil specimen. During my mechanical measurements I observed that the rock reacts much faster on stress rate changes (observable by a sharp kink in the deformation...

01 October 2019 3,063 5 View

Uniaxial compressive strength of Westerly granite?

What is the uniaxial compressive strength of westerly granite? References would be appreciated.

09 September 2019 8,662 2 View

How do I calculate the Reduced Young's Modulus in contact mechanics?

Hello. I have begun studying Contact Mechanics very recently, and I am having trouble in understanding the Reduced Young's Modulus (E*). I have looked at several different books, and I haven't...

24 July 2019 1,400 4 View

Boundary condition on a solid surface under traction/compression ?

Hello, I have a block of solid material in which an elastic wave is propagating. On one side of the block I maintain a static surface stress (the agent causing this stress is external to the...

19 July 2019 8,417 7 View

Which COMSOL module should be purchased for high-frequency ultrasound analysis of soft material?

Hi, I am using COMSOL multiphysics 5.3a to model high-frequency ultrasound analysis of soft material. I was coupling Acoustics and Solid Mechanics physics for my modeling. During the simulation,...

24 April 2019 7,958 3 View

What are the best polynomial approximation functions for analyzing free vibration and impact analysis of plates?

I want to do a free vibration analysis for a plate. In this research, I want to use the Ritz method. For Ritz-shape functions, which are the best polynomial functions that give the most accurate...

11 April 2019 2,714 5 View

What is the difference between variation in displacement and virtual displacement?

Also when referring to variation in the work (virtual work), we use virtual rotation not rotation variation? Thanks.

06 April 2019 3,417 10 View

At implementing damage model, How could I get the effective stress-strain curve or damage parameter from true stress strain curve?

Most experimental results include true strain curve. How could I experimentally or theoretically reach effective stress strain curve or damage parameter for damage model? Thanks

02 March 2019 9,138 11 View

How to set up Coupled Displacement Boundary Conditions in COMSOL?

Dear Community, I recently switched from ANSYS Mechanical to COMSOL Multiphysics. So far I was able to transfer my models to the new platform but I yet miss one feature of ANSYS in COMSOL. I hope...

30 January 2019 5,042 3 View

Negative principal strain positive principal stress??

Hello there. I have done a strain gauge analysis of an aluminum bracket under loading. I used a rossette (0/45/90) gauge as the picture_1 shows, the gauge is displaced with 20degree from the...

12 December 2018 8,235 3 View

Negative principal strain positive principal stress??

Hello there. I have done a strain gauge analysis of an aluminum bracket under loading. I used a rossette (0/45/90) gauge as the picture_1 shows, the gauge is displaced with 20degree from the...

07 December 2018 4,581 3 View

Simple examples ,books and papers about The generalized differential quadrature method (GDQ) ?

I want to start working on the generalized differential quadrature (GDQ) method to solve the problem of the mechanical behavior of the beams, the plates and the shells. Dear colleagues , I...

14 November 2018 7,763 3 View

Simple examples ,books and papers about The generalized differential quadrature method (GDQ) ?

I want to start working on the generalized differential quadrature (GDQ) method to solve the problem of the mechanical behavior of the beams, the plates and the shells. Dear colleagues , I...

11 November 2018 3,951 3 View

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