Simulation Tech Tip: How can I simulate freezing water expansion?

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Now that spring is here ice is probably the last thing on your mind. Unless your designing a product where stress induced from freezing is a problem. One of my customers posed an interesting question.  How might we emulate freezing water in FEA ?  As you may know water expands when freezing and this can wreak havoc on any structure where water is contained or trapped.  Hence all the lovely pot holes in the spring punishing our fancy alloy wheels.

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SOLIDWORKS Simulation: 30 Minutes to Smarter Design Decisions

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In the past 20 years, I have worked in manufacturing, product design and as a consultant/applications engineer for several simulation software companies. Working with many companies seeking to innovate and differentiate their products, I have seen personally that the decisions engineers make early in the design process often make the difference between success and failure of the products and the companies.

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Simulation Tech Tip: How to Load Results Faster and Reduce File Size for Nonlinear and Transient Studies (Results Options)

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Here’s a quick and simple tip for all multi step simulations , dynamic, non linear, drop  etc… You don’t have to keep ALL the data for EVERY solution step the solver takes.  The solvers will take smaller steps for convergence purposes and a solution may have hundreds of steps. For a large model this means large files and computational overhead (aka lag switching between studies. The good news is we may not need every piece of data for post processing […]

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CAD Simulations: Cooking a Turkey

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While I was deciding on an appropriate brine, rub and injection for this years Turkey I was curious how closely a quick and dirty simulation would come to the reality of my smoker out on the deck? So while I was waiting for the bird to thaw I started modeling one up.  Then, to calculate the fowl temperature versus time I used a 4 step process: 1. Gather Data and make Assumptions: – I’m assuming homogeneous thermal properties. – Assuming […]

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Plastics Tech Tip: Is the Plastics Solver Able to Use Multiple Cores?

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I often get asked for hardware recommendations for our simulation products and if  the solvers are able to utilize multiple cores.  One great value with our solvers like Plastics and Flow is that you do not get charged for using multiple cores and both solvers show great scalability when adding cores.  I wanted to quantify that scalability with a quick test today.My general recommendation and rule of thumb is that clock speed/number of cores affect solve times and memory affects […]

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PLASTICS TECH TIP: Configuration Integration (with video)

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SOLIDWORKS Plastics gives you a little more flexibility than our other simulation tools with respect to simulation model management. In particular, you can choose if you want to link your simulations to your SOLIDWORKS CAD configurations. This is a handy way to manage multiple Plastics analyses but you only have to manage one CAD file. For example, if you have just run a plastics simulation and you want to change a gate location, material, or process setting you can copy […]

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SOLIDWORKS PLASTICS TECH TIP: Counter Deformed Geometry Export to Counteract Warpage

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The primary goals of any plastics part designer and molder are to manage costs and hit critical tolerances. SolidWorks Plastics can help us predict part warpage and therefore optimize our design and process to minimize its occurrence. There are many factors that affect part warpage. Here are just a handful: – Part Geometry – Material – Fill time – Cool Time – Pack Time – Ambient Temperature – Gate Locations When we have done everything in our control to minimize […]

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SOLIDWORKS Simulation 2014: New Features

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It’s time to start taking advantage of the new features in the 2014 release of SolidWorks Simulation that will make our lives easier. For 2014, I’ve compiled a quick video highlighting the what’s new features that simulation users will find exciting. I’ve grouped them into three main categories. Performance, Post Processing and Efficiency enhancements. Performance: Loading of Simulation Studies Solver Enhancements (non linear, iterative solver speed, new large problem direct sparse solver) Post Processing Results: Contact Pressure Plots in 2D […]

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SOLIDWORKS SIMULATION TECH TIP: Flexibility in Non-linear Fixtures

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There’s a feature I always suspected was in COSMOS/SolidWorks Simulation Premium, but I never needed it badly enough to do more than a web search to a dead end and give up. Well, I finally had the need: it was an analysis of a clip/pin system.The goal: Determine plastic deformation and insertion/retention forces during the pin installation/removal process solved in sequence. 1. The “C” clip is first installed on the housing. 2. Then then pin is inserted into the housing […]

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