The paper presents a systematic study of dispersive waves in an elastic chiral lattice. Chirality is introduced through gyroscopes embedded into the junctions of a doubly periodic lattice. Bloch-Floquet waves are assumed to satisfy the quasi-periodicity conditions on the elementary cell.
I have a one dimensional bar with a triangular pulse given at one end for 2 microseconds. The boundary conditions are free-free.I am having two cases. One in which the deformation is local (Hooke's law) and other in which the deformation is dependent on a kernel of radius r (say 5* element length).I find that the wave speed is higher when the deformation is non-local as compared to local deformation case. Is this correct? Is there a way to verify the solution?
We are seeking a motivated PhD student (only a student currently in the US for an immediate start) to work as a Graduate Research Assistant in our NSF project titled "Metamaterial-Enhanced Electroelastoacoustic Energy Harvesting for Sensor Systems." This computational and experimental project will investigate electroelastoacoustically coupled linear and nonlinear metamaterial-inspired piezoelectric energy harvesting concepts for self-powered sensor systems.
Hi every body,
I'm looking for a FEM code (Matlab, C++, Python,...) for analysis wave propagation in plates.
It would be the most kind of you to let me know how I can find it.
Regards,
This monograph gives a complete overview on the subject of nonconservative stability from the modern point of view. Relevant mathematical concepts are presented, as well as rigorous stability results and numerous classical and contemporary examples from mechanics and physics.
The School of Mechanical Engineering and Mechanics, Ningbo University, is looking for cadidates for all subjects in the broad field of mechanical engineering and mechanics. In addition to traditional field of impact and shock waves, piezoelectric devices, material durability, and metal forming, the school are also initiating new directions like vechicle engineering, fluid mechanics, occean engineering, and other related subjects.
Positions in ALL ranks are available. Currently we are taking applications for 2014 school year.
Hi ,
I'm working on simulation of wave propagation in a bar. I'm using
newmark time integration scheme to solve my problem. I have a bae
clamped at one end and under tensile at the other end. when I decrease
my time step ,at the beginning of the loading I see tiny negative
strains which is so weird. I used some numerical damping with the scheme
and I could reduce the time step but still I have this problem in
smaller time steps. Can anyone help me with this?
Thank you very much!!!
Hi, I am working on modeling wave propagation in ABAQUS/CAE.
I am not expert on ABAQUS and trying to figure out how it works.
I have a 2D Shell steel plate (1 centimeter by 1 centimeter) and try to obtain wave speed at any points of plate.
I put the material properties in and used ABAQUS/Explicit analysis.
Time steps are 1E-009 seconds and there are 2 steps (impulsed at the first step and propagates at the second step).
The load pluged at the amplitude with equaily spaced for 0.1 micro seconds (so it becomes impulse load).
The Laboratory of Thermodynamics in Emerging Technologies (LTNT) at ETH Zurich has an opening for a
Post Doc
Area
Computational structural mechanics with focus on soft tissues and wave propagation
(jointly with Siddharth Savadatti and Senganal Thirunavukkarasu)
