What is a good paper with literature survey on finite-strains (for fluid or solids)?

More Saeb AmirAhmadi Chomachar's questions See All

Is it possible and practical to build an electronic box with this transfer function?

PID controller is reportedly widely built and used in control systems engineering for industrial applications. The PID-controller has a transfer function as: (Kd*s^2+Kp*s+Ki)/s. Therefore, it...

08 November 2020 7,771 10 View

What if we flip the role of actuator and plant blocks in a linear control system block diagram?

We all have been accustomed to see a block diagram for a linear control system, where in the forward path, first sits the controller, then actuator, and then plant. What if we flip the blocks of...

05 October 2020 9,363 21 View

What are the major causes of rejection of scientific papers?

What determines the success or failure in publication of scientific manuscripts? More often than not, scientific manuscripts are prone to rejection, because of the process being mysterious and to...

30 September 2020 768 1 View

Is it possible to control a control system in real domain, with a control signal which contains complex (imaginary) values?

Assume we have a control system in state space as: xdot1=u1, xdot2=u2, where x is state and u is control. I am interested to know the possibility of complex valued control signal to control such...

27 August 2019 7,065 3 View

How to get and plot the surface of value function v(x,t), for an optimal control problem?

please catch a glimpse on the pdf attached to this question, and let me know, how to plot the surface of value function v(x,u,t). Please also remind me what are the names of coordinate system on...

16 April 2019 5,766 1 View

Why is control set in theoretical control systems theory, assumed convex?

I am interested to know, why is control set in control systems theory, usually assumed convex, more specifically, a convex cone, a convex hull or a convex set? Please let me know if you've gotten...

24 March 2019 7,247 4 View

Which one, tensor strain-rate or engineering strain-rate for 2D fluid flow analysis?

I am to know what is the difference of using tensor strain (particularly its rate) and engineering strain-rate for two dimensional fluid flow analysis. As you may know, the Navier-Stokes momentum...

16 August 2018 5,567 4 View

How can I solve these plain differential equations related to fluid-flow velocity vector field?

Assume: du= f1(u,v).dx+f2(u,v).dy (1) dv= g1(u,v).dx+g2(u,v).dy (2) f1,f2, and, g1,g2 are continuous and known functions. We know further that implicitly h(u,v)=0 and hence we...

25 July 2018 6,300 9 View

How to visualize fluid-flow vector field, having implicit ode of the velocity components?

I want to have insight over fluid-flow vector field, as I have an ordinary differential equation (ode): dv/du=-2(u2+v2)/(v2 - 5u2) where u and v are horizontal and vertical velocity components...

24 July 2018 4,828 5 View

What is the real model associated to ordinary differential equation: xdot=x^3+u?

As I know, the ordinary differential equation (ODE), xdot= -x^3+u, where x is the state variable, and u the control variable, is the control system associated to a falling object in atmosphere...

24 June 2018 7,903 99 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

What is the characteristic length to determine the Reynolds number for the scattered turbulent fluid flow?

Dear all, I just saw this example in FB on the difference between laminar flow and turbulent flow. The flow from a pipe hits the sink and scattered. The flow from the pipe is characterized as...

02 March 2021 1,999 5 View

Is there a powerful system for the security of the systems distributed on IoT systems?

02 March 2021 3,858 10 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

How much pressure we can reduce at the outlet to avoid Reverse Flow?

I am simulating Heat Exchanger. I have tried and tested all the methods to resolve this issue from the internet like refining mesh, improving skewness and orthogonal quality ,extending outlet to...

01 March 2021 6,985 3 View

How to show arrows over the streamlines in CFD-post?

I follow this to make streamlines like the photos attached below: (software- CFD post-processing) First I plot the 2D streamline over a surface "streamline 1". them I plot a vector by the...

01 March 2021 8,668 3 View

How to increase mesh quality of a cfd model in ansys fluent?

How can one improve mesh skewness, orthogonality, aspect ratio?

28 February 2021 7,730 3 View

Is there a deep reason for using the squared modulus of the wave function as the probability density of the existence of the particle?

I think we were all surprised at the first time we got to know quantum mechanics that the squared modulus of the wave function is the probability density of the existence of the particle? The role...

28 February 2021 6,282 9 View

For modelling epoxy-based matrices (in composites), which model in ABAQUS is the most suitable, Concrete damaged plasticity or Drucker-Prager model?

I am working on developing a micromechanical FE model for predicting kink-band formation in UD composites. To model matrix plasticity, which model, out of Concrete Damaged Plasticity and...

28 February 2021 5,415 1 View

Yousef Heider

Finite strain is only related to solids and not for fluids..!!

I recommed this book for literature review: Nonlinear Solid Mechanics : A Continuum Approach for Engineering / G.A. Holzapfel.

Rajashekhar Choudhari

Check the following link. Hope it may help you .

https://ac.els-cdn.com/S1877705817300498/1-s2.0-S1877705817300498-main.pdf?_tid=0904070c-d02b-4de4-ab52-b875d87a599c&acdnat=1525772587_0adf92890c0c024ef0157f63a12be0fd

Alexander Levitin

You can see chapters 2 and 3 in book

Wriggers P. Nonlinear finite element methods. Springer, 2008. https://www.springer.com/gp/book/9783540710004

Saeb AmirAhmadi Chomachar

Thank you Rajashekhar, Alexander and Yousef.

@Yousef: first thanks. As I know in fluid mechanics we describe velocity vector field and in solid mechanics we describe displacement vector field. Navier-Stokes for fluids and constitutive for solids, or Lagrangian standpoint for solids and Eulerian standpoint for fluids. As one of my research projects, I am to make analogies between these viewpoints, for example an analogy between boundary-layer velocity profile for fluids and Saint-Venant stress (or strain) profile for solids. For concreteness, shear stress has mathematically similar terms for fluid and solids, when we ignore the exact meaning of vector field variables. You are right to distinguish between these analogies, but the point is that I am trying to bridge this gap. Regards. Saeb.

Sergey Kuznetsov

One of the best and comprehensive books on non-linear mechanics is by Truesdell and Noll:

https://link.springer.com/content/pdf/bfm%3A978-94-017-0713-8%2F1.pdf