Recent content by miraboreasu

Thank you, but sorry I didn't get it, how can I rewrite the vector-matrix form into the form like 2.9. I mean use tensor product, I, to represent the following

Actually, this is not homework, but I think I need help like homework. It was raised from the notice that there is no tensor form of linear Hooke's law in terms of Young's modulus E, and Poission's ratio, v. For example, if we use lame parameters, we have G, \lambda, like The linear Hooke's...

Hello, I have seen some pictures about hydraulic fracturing, which is injecting water into the ground under high pressure, and when people draw the schematic, it looks like this I am wondering why the fracture will be branched. Thanks!

Hello, I am looking for FDEM software that can do poroelasticity and has a hydraulic solver besides a mechanics solver.

Thanks, sir, but I didn't quite understand, I have multi varying, and I want to create a unified function for them. What I am thinking is y1= alpha x1+beta x1+gamma x1. But I want to know more details

Hello guys, I have conducted an experiment and got some results. I have 3 variables to vary, for example, five x1, five x2, and two x3 and 2 observation results, like y1, y2 I already make y1 y2 and x1 x2 x3 dimensionless since plot is 2D, what I am doing now is just plot when x3=1, x2=1, plot...

Thanks, is there any equation or material showing how C and A in the energy dissipation term? Like the whole form.

Yes, sorry I miss this part, assume the mechanical wave in a 2D and 3D elasticity pane and space

Thanks, can you please provide more materials about this dependency?

Thanks, can you please provide more materials, so I can take look at the derivation? I think this is coming from area and volume, but I want to see the details,

Hey Condition 1: A 2D infinite plane and there is a circular hole in the middle. When t=0, an impulsive loading, P=f(t), is applied to the boundary of the circle(outward), so the wave will start at the boundary of the circle and propagate in the plane Condition 2: A 3D infinite plane and there...

If the cavity is a ellipsoid, I know the a, b, and c for it, what solution I should seek for?

Now I finally get it, but what value I should use from p=f(t) to for the P in the work equation

I have the p(t) like this, only consider the positive part, can I still use steady state? https://en.wikipedia.org/wiki/Blast_wave and for this equation, $$w=\int{Pdu(R)}=\int{P\frac{R}{4\mu}dP}=\frac{P^2R}{8\mu}$$ the integral is from where to where when du? and the integral is from where to...

Can you please show me more detail about how to get $$w=\int{Pdu}=\frac{P^2R}{8\mu}$$ from $$u=\frac{PR^3}{4\mu r^2}$$and, at the cavity boundary $$u(R)=\frac{PR}{4\mu}$$ I didn't get how to get $$du$$, I know how to get u(R)