iMechanica - free software
https://imechanica.org/taxonomy/term/797
enMatlab-based Digital Image and Volume Correlation Simulators
https://imechanica.org/node/12853
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/962">software</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/580">DIC</a></div><div class="field-item odd"><a href="/taxonomy/term/581">digital image correlation</a></div><div class="field-item even"><a href="/taxonomy/term/797">free software</a></div><div class="field-item odd"><a href="/taxonomy/term/7756">DVC</a></div><div class="field-item even"><a href="/taxonomy/term/7757">digital volume correlation</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p></p>
<p>Hi,</p>
<p>I just posted a Matlab-GUI easy-to-use DIC and DVC simulator tool on our website (franck.engin.brown.edu) for download for anyone that works with DIC or DVC. The purpose of these simulators is to simulate deformation fields based on a user provided image (2D) or volume (3D), and evaluate the correlation results with the analytical solutions to provide quantitative feedback on the "goodness" of the provided images for DIC or DVC purposes.</p>
<p>Feel free to use them for research, teaching, etc. We welcome any suggestions for improvements, etc.</p>
<p>Hope you enjoy them as much as we do.</p>
<p>Cheers,</p>
<p> </p>
<p>Christian Franck </p>
</div></div></div>Fri, 27 Jul 2012 17:33:04 +0000franck@brown.edu12853 at https://imechanica.orghttps://imechanica.org/node/12853#commentshttps://imechanica.org/crss/node/12853New Release of General Purpose Micromechanics Code: VAMUCH 3.0
https://imechanica.org/node/11904
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/128">education</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/18">micromechanics</a></div><div class="field-item odd"><a href="/taxonomy/term/569">composite materials</a></div><div class="field-item even"><a href="/taxonomy/term/609">homogenization</a></div><div class="field-item odd"><a href="/taxonomy/term/797">free software</a></div><div class="field-item even"><a href="/taxonomy/term/2605">Multiphysics</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
I am writing to let you know the release of VAMUCH 3.0, the 3rd version of our general-purpose micromechanics code. The main new features are: </p>
<p>1. Multiphysics capability: VAMUCH can be used to homogenize heterogeneous materials which have coupled or uncoupled responses to mechanical field, electric field, magnetic field, and thermal field. It not only predicts elastic, conductive, dielectric, magnetic, and diffusive properties of heterogeneous materials but also coupled properties such as coefficients of thermal expansion, pyroelectric, pyromagnetic, piezoeletric, piezomagnetic, and/or eletromagnetic properties, as well as the local fields corresponding to these multiphysical responses.</p>
<p>2. The efficiency and capacity has been significantly increased by using a new method of optimizing the mesh, and multifrontal out-of-core linear solver HSL MA77, and the METIS package. VAMUCH can compute much large models with many more degrees of freedom in a much more efficient way. Many times or even up to one hundreds times increase in efficiency is also possible for some big models.</p>
<p>3. Model UCs with curved edges/surfaces and also relax the restriction that the origin of the coordinate must be at the UC center. </p>
<p>4. Model temperature-dependent materials with/without assuming small temperature variations. One single run of VAMUCH can generate a series of temperature-dependent effective properties. </p>
<p>If you are interested in trying this code, please let me know. I hope this code will be useful for the mechanics community.
</p>
<p>
Wenbin
</p>
<p>==========================================<br />
Associate Professor<br />
Utah State University <br /><a href="http://www.mae.usu.edu/faculty/wenbin/"></a><a href="http://www.mae.usu.edu/faculty/wenbin/">http://www.mae.usu.edu/faculty/wenbin/</a><a href="http://www.mae.usu.edu/faculty/wenbin/"></a></p>
<p><a href="http://www.hifi-comp.com">http://www.hifi-comp.com<br /></a><a href="http://groups.google.com/group/hifi-comp">http://groups.google.com/group/hifi-comp</a><br />
===========================================</p>
</div></div></div>Sat, 11 Feb 2012 21:12:56 +0000Wenbin Yu11904 at https://imechanica.orghttps://imechanica.org/node/11904#commentshttps://imechanica.org/crss/node/11904DNAD, a simple tool for automatic differentiation
https://imechanica.org/node/10081
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/962">software</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/797">free software</a></div><div class="field-item odd"><a href="/taxonomy/term/942">gradient</a></div><div class="field-item even"><a href="/taxonomy/term/965">derivatives</a></div><div class="field-item odd"><a href="/taxonomy/term/1869">finite difference</a></div><div class="field-item even"><a href="/taxonomy/term/3632">Optimization</a></div><div class="field-item odd"><a href="/taxonomy/term/6154">sensitivities</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
All,
</p>
<p>
I am writing to introduce DNAD, a Fortran module I wrote for automatic differentiation of analysis codes written in Fortran including those legacy codes written in Fortran 77. <span>Although only implementation using Fortran 90/95 was carried out, it is straightward to translate it to a language you like such as c/c++. </span>
</p>
<p class="fmid" align="left">
<span>Currently, DNAD is a Fortran 90/95 module developed using the arithmetic of dual numbers and the operator overloading feature of Fortran 90/95. Very minimum changes of the source codes are needed to enable sensitivity calculation of existing Fortran programs. Code differentiated using DNAD can exactly compute derivatives of the outputs with respect to design variables. DNAD has been shown to be a better alterative than using finite difference or complex-step approximation for computing derivatives (sensitivities). It has been used to automatically differentiate VABS and GEBT. <span> </span>It is an ideal way to compute sensitivities for a code you don’t know much about it. The source codes are available to anybody if you are interested. More details can be found from <a href="http://hifi-comp.com/DualNumberAutomaticDifferentiation.aspx">hifi-comp.com</a>.</span>
</p>
<p class="fmid" align="left">
</p>
<p class="fmid" align="left">
<span>Wenbin</span>
</p>
</div></div></div>Wed, 13 Apr 2011 03:04:55 +0000Wenbin Yu10081 at https://imechanica.orghttps://imechanica.org/node/10081#commentshttps://imechanica.org/crss/node/10081GEBT, a general-purpose composite beam solver
https://imechanica.org/node/9946
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/797">free software</a></div><div class="field-item odd"><a href="/taxonomy/term/6056">composite beams</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
Dear All,
</p>
<p>
I am writing to introduce to you a general-purpose composite beam solver, <a href="http://hifi-comp.com/GEBT.aspx">GEBT</a>, which can capture all the geometrical nonlinearity obtainable by the six fundamental deformation modes (extension, torsion, bending in two directions, and shearing in two directions), and the coupling between these fundamental deformantion modes, such as extension-twist coupling commonly existing in initially twisted rotorblades. The features of <a href="http://hifi-comp.com/GEBT.aspx">GEBT </a>are:
</p>
<p>
1. GEBT can analyze any structure which can be modeled as an assembly of beams made of arbitrary material and arbitrarily oriented in the 3D space.
</p>
<p>
2. GEBT can handle initially twisted/curved beams such as helical springs, curved bridges or twisted blades.
</p>
<p>
3. GEBT can capture the coupled deformation between all the six fundamental deformation modes of a beam.
</p>
<p>
4. GEBT can predict all the needed engineering behavior including linear/nonlinear statics, linear/nonlinear dynamics, linear/nonlinear eigenvalue analysis.
</p>
<p>
5. GEBT can automatically calculate the sensitivities of global behavior with respect to design parameters which is a neat feature for designers.
</p>
<p>
The code can be freely requested from <a href="http://hifi-comp.com/GEBT.aspx">hifi-comp.com</a>, along with more details.
</p>
<p>
</p>
</div></div></div>Mon, 14 Mar 2011 18:13:38 +0000Wenbin Yu9946 at https://imechanica.orghttps://imechanica.org/node/9946#commentshttps://imechanica.org/crss/node/9946Free screen capture softwares for Win and Mac users
https://imechanica.org/node/1114
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/128">education</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/796">screen capture</a></div><div class="field-item odd"><a href="/taxonomy/term/797">free software</a></div><div class="field-item even"><a href="/taxonomy/term/798">win and mac</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>I'm writing this post cause it took me much time to find some free softwares that can record activities from screen for Windows and Mac systems. I use both OS at office and lab.</p>
<p>I'm doing some experiments. One is to measure the deformation of microcapsules, both loading curves and deforming capsules via a light microscope displaying on the screen; another is to observe the movement of nano/microcapsules in a cell. For both cases everything is displayed on the screen. I want to record them for kind of live show without using any external recorder and then converting clips. </p>
<p>I did a lot of search and find a better solution for both OS.</p>
<p>For Windows (NT/2000/XP) systems, CamStudio is great. It is FREE and OpenSource. Here is a short introduction from its website: CamStudio records activity from your screen and audio from a microphone into AVI video files and can also convert the AVIs into Streaming Flash videos (SWFs) using its built-in SWF Producer.<br />It can be downloaded here <a href="http://www.camstudio.org/">http://www.camstudio.org/</a> or <a href="http://sourceforge.net/projects/camstudio/">http://sourceforge.net/projects/camstudio/</a></p>
<p>For Mac users (OS X 10.4), Copernicus is a super choice. It can record screen activities as quicktime movie. I tried and found great quality!<br />For more information, you can go ahead here: <a href="http://danicsoft.com/projects/copernicus/">http://danicsoft.com/projects/copernicus/</a></p>
<p>BTW, I'm posting these not for advertising for them. Just for those people who are looking this kind of free software for their research. </p>
<p>Enjoy! </p>
</div></div></div>Sun, 25 Mar 2007 05:18:51 +0000Jinglei Yang1114 at https://imechanica.orghttps://imechanica.org/node/1114#commentshttps://imechanica.org/crss/node/1114Error | iMechanica