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Wenbin Yu's picture

Please recommend a good mechanics of material book

I am teaching mechanics of materials to sophomore. However, our students do not have a separate static course. They get a some exposure to free body diagrams in particle dynamics. I am currently using the book by Gere and Goodno. But I found that both the teaching and learning experience were not good. Thanks a lot in advance for your suggestions!



Free Elementary Differential Equations and Real Analysis Textbooks by William F. Trench

The following  items can  be downloaded  free of  charge from  Digital.Commons@Trinity:


previously published by  Brooks/Cole  Thomson Learning, 2000,


Picture frame shear test

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 I'm trying to simulate a picture frame shear test using ABAQUS and I have landed up with some problems for which I haven't been able to find any solution from almost a week. Any help would be much appreciated!

So, here's the problem:

Boundary Conditions

Taxonomy upgrade extras: 

Isotropic hardening law

Hi all,

I have come across the two relations where aim to describe the isotropic hardening of a material

Power law:

R = Kεpn R is the variation in stress from initial yield, εp is the plastic strain where K is the strenght coefficient and n is the strain hardening exponent as observed in Ramberg Osgood equations.

Exponential law:

R = R∞ [1-e(-bεp)] where R∞ is the saturated value of the R variation, b is the rate at which the sauration is reached.


Mudassir's picture

Why shape function is kept orthogonal to residue in Galerkin method?

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I have a question regarding the shape functions. Why the shape function is kept orthogonal to residue in Galerkin method? Looking forward to hearing from you all.

Mudassir's picture

Why shape function is kept orthogonal to residue in Galerkin method?

I have a question regarding the shape functions. Why the shape function is kept orthogonal to residue in Galerkin method? Looking forward to hearing from you all.

Workshops or summer school in FSI using meshless methods

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Hello everyone,

 I am a doctorate student working with meshless methods for fluid flow. I would like to attend a summer school or workshops that can enrich my knowledge in FSI and meshless methods for FSI. I would really appreciate if anyone could recommend me a good school around Europe. As far as I have searched I was unable to find courses in the internet.

Thanks for your help,


Prager's Hardening Rule

Hi all

I am currently investigating Prager hardening room which is stated as the simplist linear kinematic hardening rule. I was wondering if anyone has worked with this model and if so if you have managed to identify how to determine the constant used for the back stress equation


dα =C * dεp ( this is epsilon dot p which is the equivalent plastic strain)


Please can you let me know how to determine the constant C from experimental results? 

Maseng's picture

presenting a new method to model of metal foams

i have presented a new method for the first time to model of metal foams that subtracts stochastic cells from a desired volume and changes it to a foam.

i would like to know if there is any phd position for this?

thank u for your consideration :)

Lifeng Wang's picture

PhD Position Available in Multifunctional Composite Materials

One PhD position is available immediately in the Department of Mechanical Engineering at Stony Brook University, NY, US.  The research program focuses on the mechanics and multifunctional applications of 3D periodic composite materials including shape memory, acoustic/elastic wave propagation, and energy harvesting. The candidates with background in solid mechanics and finite element analysis are highly encouraged to apply. 

Ice failure simulation


  I want to simulate Ice failure simulation in abaqus. In my problem, ice is deposited between 2 components.

  While I am trying to move one compoents, the ice is restricting the movement of the components. Now I want to find out the force at which the ice starts to failure .

  any methods are available n abaqus., Plz let me know if any body knows abt this kind of simulation.


Thanks in advance


Viscoelastic & Viscoplastic Behaviour of flex printed circuit boards under bending loads


I am currently working on my M.Sc Thesis project of fatigue lifcycle of Flex printed circuit boards which is composite material of Polymer & Metal.Want some help who has worked on this topic which deals with Viscoelastic & Plastic behaviour of materials under action of pure bending loads.Help & Guidance would be appreciated.Need to come up with an equation which has stress & strain relating to lifecycle of Flex printed circuit boards.

Awaiting your reply,




homogenization on abaqus

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I'm looking for how we can do homogenization on ABAQUS.
thank you in advance.

Je cherche comment nous pouvons faire homogénéisation sur ABAQUS.
merci à l'avance.

The Renaissance of Continuum Mechanics

Dear friends of IMechanica:


Primary data mining through Web of Science
reveals that the number of papers containing “continuum mechanics ” increases
rapidly these years. This is a very exciting fact to our mechanicians. Thus, I
wrote a short paper titled “The Renaissance of Continuum Mechanics”, which was just
published online via:


Inelasticity of Materials:An Engineering approch and practical guide by Arun Srinivasa

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Has anyone followed the book Inelasticity of Materials by Arun Srinivasa?

 I was interested in the way he used lumped parameter models to describe material behaviour in Chapter 3. Trying to follow his methodology I wanted to implement it for some experimental results I have.

 However, I have faced an obstacle in trying to work out the hardening modulus of the the material in question. He has worked it out for his example case by curve fitting but I am just not getting the answer.

Question about Smeared Crack models

Hi, I want to ask you guys about how to model an unconfined conrete material with smeared crack model in abaqus 6.10, especially about what kind of parameter should I use and how much the value of parameter. I would really appreciate if you could give me some tutorial, explanation, or even an example of how should I model a smeared crack model in abaqus.



How to give an Impact loading in ANSYS workbench static structural


Can any one know the way to give and impact force in  ANSYS workbench static structural ?


Distinguished Researcher to Speak at NJIT on Preventing Bone Loss

Biomedical researcher Stephen C. Cowin will describe a promising model for studying nutrient transport from the vascular system to bone tissue

modelling and analysing the laminated composites in ANSYS 14.5

I WANT TO find the flexural strength of laminated composites after it is subjected to cyclic loading

i have to use the output of the cyclic loading as the input to find the strength

i want to know the procedure for that

please help me out



MWR for the first- and third-order differential equations

Hi all,

In engineering sciences, we usually end up using either the second- or the fourth-order differential equations, and the MWR (the method of weighted residuals) works pretty well for them.

The question is: how about the first- and the third-order differential equations? Why don't we see any applications of MWR for these odd-ordered differential equations? What gives?


I have created a channel beam using 3D shell elements. It is subjected to two point loading each at 1/3rd length. I have performed STATIC RIKS analysis. Is it possible to draw bending moment diagram for this model? Orelse if i use section moments how can i interpret the maximum moment?

Your reply is highly appreciable.

Buckling analysis of a imperfection sensitive cylinderical shell under compression

I have carried out eigen buckling analysis of cylindrical shell under axial compression under unit load  using abaqus in model-1 and in model -2 i carried out riks analysis gave imperfection 0.2mm fotr shell thickness 2mm radius 0.25m,h=0.5 m after the 100 increment the the shell is subjected to load which is obtained from first buckling load in first mode  here how to get the collapse load


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