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I am currently doing my undergraduate final year project on gas flow dynamics of airbag. I am using LS-Dyna to simulate 3 different gas flow condition (uniform pressure, ALE and corpuscular).
I am able to obtain a simple model of airbag from LS-Prepost website. I am modifying it to learn more on ALE and corpuscular.
For ALE method,
The airbag that I simulated cannot inflate but when I plot ASCII file, there are changes in pressure and density of the control volume. But, there are no changes in the physical of the model (no displacement, no increase in volume). There are massless node error present.
For corpuscular method,
SoftInWay Turbomachinery Solutions Pvt. Ltd., an Indian subsidiary of SoftInWay Inc., proudly announces its first educational event in India: 5-day integrated training course on Axial Turbine Fundamentals and Turbomachinery Design and Optimization with AxSTREAM 3.0, to be held on January 17-21, 2011, in Bangalore, KA. The early-bird registered attendees will take advantage of a 33% discount (this offer is valid until December 24, 2010).
This intensive training course, developed by the SoftInWay team having over 30 years of experience in designing flow paths and teaching turbomachinery, consists of two independent parts:
hi this s murugesan from chennai.....i am doing final year M.E CAD CAM...i am doing project on 'delamination analysis in glass fiber reinforced composites using ansys'...pls help me, hw to analyse the laminate composite material by using ansys.....i don know ansys efficiently....so kindly tell me detailed step by step procedure for analysing......
specifications of specimen.....
length = 125 mm; initial crack = 50 mm; laminates = 8 layer; thickness = 4.5 mm; density = 600gmcc.
pls tell me full tutorial for my projects.....my email id; firstname.lastname@example.org
Effective Shear Strain: A Useful Concept for Understanding the Electromechanical Response of Helical Rippled Carbon NanotubesSubmitted by td on Tue, 2010-12-07 03:17.
A paper on stochastic multiscale fracture analysis of three-dimensional functionally graded compositesSubmitted by arindam.chakraborty on Tue, 2010-12-07 02:18.
Given link is for a new moment-modiﬁed polynomial dimensional decomposition (PDD) method developed for stochastic multiscale fracture analysis of three-dimensional, particle-matrix, functionally graded materials (FGMs) subject to arbitrary boundary conditions.
I have a question regarding ABAQUS and soil nailing wall. In face I want to know what interaction or constraint can use to connect nail (truss element) and soil (shell element ) to work fine ? I tried tie but the problem is that when soil settled under loads it polls the wall inside and obviously it is wrong.
The Fluid Dynamics and Solid Mechanics group at Los Alamos National Laboratory is currently seeking outstanding candidates to fill a post-doctoral research position in computational solid/structural mechanics.
The prospective candidate is expected to take part in the development of non-classical, global-local plate/shell finite elements for applications involving the response and/or failure of composite structures under severe dynamic loading conditions.
Ionic polymer conductor network composite (IPCNC) is a mixed conductor consisting of a network of loaded ionomer and another network of metallic particles. It is known that the microstructure of the composite, especially that of the electrodes, plays a dominating role in the performance of an IPCNC. However the microstructures of IPCNC have seldom been addressed in theoretical models. This letter formulates a continuum field theory for IPCNC by considering a supercapacitor-like microstructure with a large distributed interface area. The theory is then applied to the study of the equilibrium deformation and electrochemistry in a thin-sheet IPCNC actuator.
I got to model the local buckling in Abaqus, but i do not know how. my model is a profiled steel sheet under distributed load.
does anyone have idea about this?
Thanks in advance
One of the greatest challenges facing the electric power industry worldwide is how to deliver the energy in a useable form as a higher-value product, especially in the area of renewable energy. By storing the power produced from immense renewable sources off-peak (e.g., daytime for solar energy) and releasing it during on-peak (e.g., nighttime) periods, energy storage can transform low-value, unscheduled power into schedulable, high-value “green” products.
I am doing drop test simulation in Ls-Dyna for a transport system consisting of polyethylene foam as cushioning material. Does anybody know damping coefficient value levels for LDPE (Low density polyethylene) foam materials in the range of density of 30-80 kg/m3.
Thanks in advance
In the last decade, different
cyclic plasticity models, based on the “continuum” approach, have been proposed
in order to account for different mechanical effects (such as ratchetting,
strain range dependence, non-proportional loading and memory effect), [1, 2]. A
disadvantage of this approach is the elevated number of model parameters
introduced in order to correctly predict the material behaviour. The determination
of these parameters, usually difficult and expensive, is one of the reasons why the modern
constitutive models are not widely used in finite element simulations of
The Laboratory of Thermodynamics in Emerging Technologies (LTNT) at ETH Zurich has an opening for a
Computational structural mechanics with focus on soft tissues and wave propagation
Title: Structural FEA Intern
Employer: Schlumberger Technology Corporation
Location: Sugar Land, TX, USA
Starting Date: 01/01/2011
Raiway axle failures have been the starting point for the studies on fatigue. However, recent accidents and papers (see  by Hoddinott) have shown that corrosion-fatigue plays a significant role.
At PoliMi we have recently investigated this topic finding interesting results by corrosion-fatigue tests on small-scale specimens and, recently, a validation of the model by full-scale corrosion-fatigue tests (see papers [2-3]).
A typical failure of a full-scale axle specimen subjected to corrosion-fatigue (rotating-bending in presence of artificial rainwater) for an axle of A1T subjected to 10^7 cycles at 160 MPa. The main crack is accompanied by the presence of many small cracks.
A postdoc position is available next January at Research Center for Applied Sciences, Academia Sinica in Taiwan on the molecular simulation of the water/graphene interface.
The official version of ANSYS - IOSO RDO for CFD Webinar record is available: http://www1.ansys.com/customer/publi...=yes&agenda=no
After the filling the form you can immediately start watching.
In the following the italicized portions were stricken from the oral presentation to better approximate the time length suggested. They are retained here primarily for the preservation of historical developments in mechanics.
Experimental Mechanics of History
It is a great honor to be selected to address you tonight on the occasion of receiving the Timoshenko Medal, the award notification of which caught me by total surprise. Selections for such honors are sometimes difficult and possibly contentious processes, and I thank the 15 or so colleagues making up the various committee groups for their forbearance and benevolence towards me. I am proud of this award, because it makes me only the fourth Caltech faculty recipient, with Theodore von Karman, Eli Sternberg and Anatol Roshko the forerunners, and with two of these being heavily devoted to experimental work. I belong to a generation that no longer has a personal connection to Stepan Prokofievich Timoshenko, nor do I possess an academic genealogy which connects me to him, other than the assiduous studies of his “black books” as other Timoshenko awardees have called them. Instead, my history links me, in direct sequence, to Max Williams, Ernie Sechler, Theodore von Karman, Ludwig Prandtl, August Föppel and Christian Otto Mohr, of Mohr’s circle fame: I owe a lot to these, my academic “forefathers”.
One of the intended purposes of the addresses following the Timoshenko award dinners is, if somewhat loosely, to preserve a history of (applied) mechanics. The choice of my title implies the reverse, namely that mechanics can and does describe or control history. That is indeed true if one thinks of the structural systems that contain viscoelastic materials which require the tracking of the deformation or loading histories to describe the system response. This may be a superficial twist of words, but the realistic implications are severe, as, I hope, you will see.