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Design of Storage Tank( including Cone roof structure analysis)

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Namaste from India.Jay Naik here. I am Post graduation Student doing Specialization in Machine Design.I am Doing My project in Master in area of" Design of storage tank" in One of the reputed company in Static Equipment Design.Any Idea on which Software(Fea or failure analysis) Design of storage tank is carried out?I have heard about AMETank and Ansys.

Secondly i am carrying out Literature review Present days.reading API 650 and other standards.Suggestion requires in this area.

Please guide me in proper manner.in which way i should carry out the project in systematic way.

Newton Raphson for FEM

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Hi,

I am currently working on a FEM  2d plane strain elastic model in matlab. The next step would be to use a non linear constiutive law (Mohr-Coulomb). As far as I have been reading non linearities, are solved with iteration schemes. My question is how to compute the tangent matrix with the N.Raphson method? I have seen only case for polynomials, but not for matrices.

Regards!

Anna

Structural simulation position @ Bosch

Robert Bosch Engineering and Business Solutions is a branch of Robert Bosch (Fortune 500) is seeking a Senior Engineer for its Simulation team in Ho Chi Minh city, Vietnam. Only applicable for Vietnamese candidate or candidate can work in Vietnam

Senior structural simulation engineer

Requirements:

·         BSc, MSc or PhD in Mechanical Engineering, Computational Engineering, Maths or related fields

Jie-Hua Zhao's picture

FEM Job Opportunity at Apple

We are looking for a self-motivated individual who is proficient in FEM simulation with multi-year hands-on experience of FEM software ASNSY or ABAQUS. The individual should also be an expert programer of numerical simulation tools, such as Matlab and Python.

Key Qualifications 

Project Fellow (PhD) position for Indo-China project in Computational Mechanics

The project is between BITS Pilani (India) and Wuhan University (China), funded by the Ministry of Mines, Govt. of India. It is in the area of computational fracture mechanics.

Details of the project and application process is in the attachment.

PhD Positions in Advanced Virtual Prototyping at the University of Manchester

I am currently recruiting new PhD students to join my research group at The School of Mechanical, Aerospace and Civil Engineering at the University of Manchester. The core focus of the group is advanced computing for engineering simulation. My research interests centre on extreme scale parallel computing, cloud computing and virtual reality simulation platforms, applied to scientific and engineering problems involving complex processes.

PhD Positions in Advanced Virtual Prototyping at the University of Manchester

I am currently recruiting new PhD students to join my research group at The School of Mechanical, Aerospace and Civil Engineering at the University of Manchester. The core focus of the group is advanced computing for engineering simulation. My research interests centre on extreme scale parallel computing, cloud computing and virtual reality simulation platforms, applied to scientific and engineering problems involving complex processes.

Teng zhang's picture

Predicting fracture energies and crack-tip fields of soft tough materials

Soft materials including elastomers and gels are pervasive in biological systems and technological applications. Whereas it is known that intrinsic fracture energies of soft materials are relatively low, how the intrinsic fracture energy cooperates with mechanical dissipation in process zone to give high fracture toughness of soft materials is not well understood. In addition, it is still challenging to predict fracture energies and crack-tip strain fields of soft tough materials.

Ph.D. position(s) in the Mechanics of Materials at the Iowa State University

PhD position(s) are available for Spring 2016 semester to perform theoretical and computational work on phase field modeling of variaous structural changes in engineering materials and modeling of interaction between phase transformations and plasticity. MS degree and background in continuum and computational mechanics is required. Please send vita to Prof. Valery Levitas (vlevitas@iastate.edu).

Info about Prof. Levitas group can be found at

ndaphalapurkar's picture

Postdoctoral Fellow, Hopkins Extreme Materials Institute: Modeling the dynamic failure of geological materials

A new postdoctoral fellow position is available within the Hopkins Extreme Materials Institute (hemi.jhu.edu) at Johns Hopkins University.  The position is in the area of experiments and modeling of inelastic deformations in geological materials (including damage and micromechanics of fracture) under impact mechanical loading conditions.  The potential candidate will (a) assist in the development of theoretical and computational models for dynamic behavior and failure of geological materials, (b) closely interact with experts in x-ray phase

Modeling Materials Short Course in Erlangen, Germany

 

WHAT

Five-day short course on the fundamentals of continuum, atomistic and multiscale modeling of materials.

WHO

Prof. Ellad B. Tadmor (U. Minnesota, USA) and Prof. Ronald E. Miller (Carleton University, Canada).

WHERE

Friedrich-Alexander-Universität (FAU), Erlangen-Nürnberg, Germany

  

Lateral torsional buckling of I beams with restraint

I am looking to model buckling of I steel beams with restraint in abaqus. But I do not know how to make rigid connections between the steel members. 

 

Why is the other beam( beam with fixed supports) not stressed? How do i define contact between the two beams.

Jie-Hua Zhao's picture

Inter Opportunity at Apple

I am hiring an Engineering Intern this year. The candidates are expected to be graduate students with solid training in mechanics and programming. The starting date is expected to be this summer, however, it can be also earlier. This opening does not sponsor visa application and the candidates should be currently enrolled in US universities and is expected to return to the same school after the internship.  Please email your resume to jhzhao at apple.com.

Element type for modeling shear banding in 3D

Dear all,

As I am modeling shear banding phenomena in 3D, I am confused on what element type I should adopt, since there are many versions in literature. In 2D simulation, some author suggests using quadrilaterals consists of 4 cross-triangular elements, while some other use 9 node quadrilaterals. In 3D, some author use 20 noded hexahedral while some other use 8 node hexahedral with 1 integration point.

 

Export Mass Matrices in Abaqus

Hello,

 

I have to export stiffness and mass matrices from Abaqus (dynamical simulation)

and I have been using the commands *Matrix Generate and *Matrix Output

 

I need to export the matrices for different  instants of time  (time intervals) and I have noticed that the entries

of the MASS matrices are not equal at different  time points.

 

Is that correct or should the MASS matrices be constant for a dynamical simulation?

 

many thanks

Mohammad Rouhi's picture

Composite Manufacturing Process Modeling Using Poromechanics

Modeling and simulation of manufacturing of advanced composite material is a must in today's industry as the use of advance composites is increasing dramatically. The aim is to reduce the number of trial and error by development of a simulation tool to model and predict the manufacturing fundamental phenomena happening simultaneously in different scales. Poromechanics is a multidisciplinary and multiphysics concept which can be used to achieve this goal.

Jie-Hua Zhao's picture

Intern Opening at Apple

You will be working on stress simulation of electronic components and sensors with a group of brilliant minds here in Apple’s Headquarters. You are a graduate student with good academic standing majoring in Mechanical Engineering, Engineering Mechanics or similar engineering fields. You are a good programmer and familiar with Python. You must be authorized to work in US. The intern position is open immediately. Send your resume to Jeff Zhao (jhzhao at apple.com).

Deformation gradient change in Abaqus

Help needed!! in Abaqus

I have UMAT written to update stress and material tangent components for a user defined material model. I need stretch ratio as an input for my material model. For this I am using deformation gradient from UMAT. Problem is, when there is constant strain (strain rate = 0), for example when material stretched to 100% strain (rubber) and then held at that strain for certain time to see stress relaxation, the deformation gradient should give the same value of 100% strain, but to my surprise this is changing. Can any one help me with this.   

 

What are the regular iteration steps of cohesive model based FEM for crack problems

   Hi, 

         I'm now start to learn cohesive zone model based FEM for crack problems. According the a regular coehsize model (bilinear for example), the relative displacement and the cohesive stress are both unknwon, so iteration is required. My question is that what are the regular iteration steps?

 

Thanks. 

Modeling of Particulate Composites

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Hi

I am trying to model particulate composites and simulate their stress-strain response. The problem that I am facing is that the inclusions (stiffer than the matrix) are only acting as points of stress concentration. Consequently their is no strengthening and hence no apparent increase in load carrying capacity of the composite. Any help/suggestioin in this regard would be higly appreciated.

Regards 

 

 

Abaqus: Composite delamination with cohesive elements

 

Hello,

I have to do a FEA regarding impact damage and delamination propagation in a CFRP specimen.

I have to do this using cohesive element in order to see the propagation of the delamination front in the material.

My problem is that I don't know how to do this in Abaqus.

I'll better explain: I can use this software but is the first time approching composite behavior and I really don't know how to model that.

Mesh free coupled with FEM

Hi All

 

I would like to know , If part of our model has geometrical complexity , is it reasonable to use meshfree method for that area ? does it fasten or ease the analysis ? how to couple it with FEM ? 

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