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Acoustics Finite Element

Hi

 

I want to model a building acoustic problem in a FEM software like Ansys or Abaqus. 

 

which of the FEM softwares are more convenient for modeling of this problem, (I mean FEM acoustics.)

 

thx.

Research Positions Available UCLA Fusion Science & Technology Center

The UCLA Fusion Science & Technology Center is seeking to fill several research staff positions to perform research in areas that include CFD, heat and mass transport, chemical processes, and/or structural mechanics. Research positions are available for beginning and mid-career levels.

Candidates should have a PhD degree in mechanical, nuclear, or chemical engineering with strong background in analysis, modeling, numerical computation, and/or experimental techniques. The research applications are in the area of fusion nuclear science and technology.

hi

test

A great russian mathematician Vladimir Arnold died on 3rd of June, 2010 in Paris

Vladimir Arnold died on 3rd of June 2010 in Paris, just 9 days before his 73rd birthday.

I am sure many mechanicians know him by his books, such as

Mohr's Circle---When Was the Last Time You Used It in Your Professional Engineering Work?

As a consultant in computational mechanics, I currently help write some FEM-related code, and while doing this job, an episode from a recent past came to my mind. Let me go right on to the technical issue, keeping aside the (not so good) particulars of that episode. (In case you are curious: it happened outside of my current job, during a job interview.)

If you are a design engineer, FE analyst, researcher, or any professional dealing with stress analysis in your work, I seek answers to a couple of questions from you:

Question 1:

soil mechanical properties for abaqus model

hi everybody

i am looking for soil mechanical properties for material definition in abaqus.

i need triaxial date or shear data for one type of soil,

can you introduse some database for this work.  

best regards

mehdi 

Hirschberger's picture

1st MUSIC Summer School on "Multiscale and Multiphysics Modelling of Interfaces"

The Graduate School MUSIC (Multiscale Methods for Interface Coupling) invites to its first Summer School on Multiscale and Multiphysics Modelling of Interfaces at Leibniz Universitaet Hannover, Germany, from 15 to 17 September 2010.

Experimental data with different specimen sizes for single notch bending test

Hello, everyone! 

 

The size effect in fracture is an important topic in fracture toughness. However, when we measure the fracture toughness of ductile materials, the standard specimens in ASTM E399 are usually adopted. I find there are few experimental data with different specimen sizes available for single notch bending test, so dose somebody provide some clues or hints for this kinds of experimental results? Thank you very much!

notch tip radius

Hello everyone,

 

I am looking for a way to measure notch tip radius experimentally. Would you give me some ideas about that? is there any relationship between  morphology of notched cracked body surface and notch tip radius?

 Thank you and Regards, 

on convected coordinates (curvilinear)

Please suggest me any good reference on curvilinear convected coordinates. I am finding it difficult to physically interpret and visualize the concept. I would be very thankful.

Nonlinear deformation analysis of CNTs with higher order Cauchy-Born rule based constitutive model

 

   Recently, we have developed a so-called higher order Cauchy-Born rule based
   constitutive model for the analysis of large deformation of CNTs [1]. It is
   a generalized quasi-continuum model for nano-structures.

zhan-sheng guo's picture

The 3rd International Conference on Heterogeneous Material Mechanics-First Announcement and Call for Papers

First Announcement and Call for Papers
ICHMM-2011
The 3rd International Conference on Heterogeneous Material Mechanics
May 22-26, 2011
Shanghai (Chong Ming Island), CHINA
http://ichmm2011.shu.edu.cn

Co-Chairs

D.L.
McDowell
, Georgia
Institute of Technology

Pedro Reis's picture

JClub June 2010: Geometric Nonlinearities in Thin Elastic Objects

Welcome to this month’s (June) Journal club, where I propose a discussion on the elasticity of thin objects (rods, plates and shells). It is a field with a long history that is being revived and rapidly burgeoning in new contexts.

L2020's picture

english equivalent of "pouvoir comburivore" ?

Hi everybody

I am translating a technical French paper. what can i use as the english equivalent of "pouvoir comburivore"? 

Thanks in advance

 

 

 

What is the equation of formula to calculate flexural rigidity of RC Slab

Dear eveyone,

I need to know the formula or expression to calculate the flexural rigidity (D) of RC Slab reiforced with steel bars. I know that for plain concrete, D can be taken as Et3/12(1-v2). However, I have no idea what is D when steel bars are added to slab. I really appreciate for any kind help. Thanks

the fatigue limit and the long-crack threshold of Aluminum 2024-T3

Hellow,everyone here:
      Anyone knows  the fatigue limit and the long-crack threshold of Aluminum 2024-T3?Thanks very much.

How to analyze a "RepRap" design (static and vibrational)?

Folks,

I'm embarking on a project to build a modified copy of a DIY 3D printer.  See http://reprap.org/wiki/WebHome to get a rough idea.  In my case, I have my own lathe and milling machine, so I can fabricate more substantial components, e.g., by machining aluminum.  I also have larger stepper motors, some 3/8" precision rod and linear bearings that I can use. 

Viscoelasticity model using Ansys

I need to model viscoelastic behavior of polymer. I have storage modulus and loss modulus data as a function of temperature. I have found to determine the Prony series coefficients Ansys need shear and bulk modulus as a function of time-temperature. Does it mean complex shear moduls which can be calculated from storage and loss modulus. Can anyone advise me how I can use my data to calculate Prony series coefficients using Ansys?

Turbine and Compressor Design: Online Training Schedule for July-December 2010

SoftInWay Inc. continues the online training series on turbomachinery design and announces the schedule for the second part of 2010:

knaumenko's picture

PhD-Student Positions in the Post-Graduate School at the Otto-von-Guericke-University Magdeburg, Germany

A number of 3 year PhD-Student positions in the areas of mechanical engineering, process engineering and applied mathematics is available in the Post-Graduate School "Micro-Macro-Interactions in Structured Media and Particle Systems", Otto-von-Guericke-University Magdeburg, Germany.

Further information can be found at  http://www.uni-magdeburg.de/gkmm/free-position-new-gk.htm

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