In Search of a Prius That Runs on Cooking Oil, or Product Documentation Contributes to the Smart Grid

If you root around the CAD websites these days, everyone seems to be looking to add a check to the "green" box.  SolidWorks, for example, recently rolled out "Sustainability Express" in all licenses of SolidWorks. This video highlights some functionality of the SolidWorks Sustainability Suite.

As the child of a Beatnik (just a bit too old to be a hippy), I find it very satisfying to find companies that are trying to do the right thing for the environment.  I am proud to say that we recently took part in just such a project.

My customer produces complex equipment used to power our world.  They recently developed a product that was widely accepted by their customers as an essential component of the Smart Grid and, simply put, sold as soon as they could build them.  And therein, as the Bard would tell us, lies the rub...

This company had sufficient floor space and enough business to triple their manufacturing capacity.  However, this piece of machinery is extremely complex and can only be built by a small number of qualified individuals.  Our customer needs to train its users without sacrificing the time of these valuable, qualified shop floor individuals. 

Recently, this company chose to implement 3DVia as a solution to this issue.  The solution will allow CAD data to be used as a starting point for interactive assembly instructions. These instructions will be delivered to shop floor with a Bill of Material (BOM) and data that describes each part.  Moreover, these instructions will be automatically updated when the BOM/geometry/description changes to alleviate confusion.

The expected outcome of this project is to build more than three times as many units, and increase revenue by 3x on the chosen product line.  If successful, the solution can be scaled up to include any product that they have designed in 3D CAD.

Ken Kesey once said "You're either on the bus or off the bus."  Working together, we are simply building a bigger, more pimped out version of the bus that will house more workers, create lower emissions and decrease our carbon foot print.  And what a long, strange trip it's going to be...

Motion Stress Recovery

Machine Designers have a tough time figuring out reaction generated to applied loading. Using SolidWorks Motion simulation users can calculate loads generated in a component. This involves a two step process, (a) solve motion analysis (b) import loads calculated in motion analysis into structural simulation and then co-relate the two. One of the cool features introduced in Simulation 2010 motion simulation is converging two steps into one.

Once motion analysis is run, users can simply pick a component of interest and tell motion analyzer to calculate reaction load during all frames of motion or pick a specific frame of interest. Obviously, number of frames accounted for, will directly correspond to time taken for calculation.

   

Coolness factor

What's amazing, is users can superimpose parameter of interest (displacement, factor of safety etc.) in a component due to applied motion and animate the results. This shows both the motion as well as reaction generated in the component due to motion in a single interface. So the user understands complete component behavior under motion.  

Rajat Trehan

Product Manager - Design Validation 

Computer Aided Technology Inc.
 
 

Double Click and Nothing!!!! when I try to change references.

 
  Stewy, Chill!!! On the Support line, we have been getting reports of users not being able to double click and browse to a file in the Edit Referenced File Dialog. Yes young Mr Griffin there is a way to fix it. It is actually a new undocumented functionality in SolidWorks 2009 SP 5.0 and SolidWorks 2010 SP 1.0, which went over like a ton of bricks. So, the functionality was for you to hold your Ctrl Key and then double click on the selected file name and then the browse for file dialog would come. Do not worry friend, the user base responded very quickly to this change and SolidWorks will be placing things back to their previous functionality of just double clicking. For a SolidWorks 2010 user you will get this in SP2.0 slated for Q1 release. And for those of you still on SolidWorks 2009 SP 5.0, you will be getting a Hot fix (Yes you heard me, a HOT FIX) shortly there after. Until then child if you are 2009 SP5.0 or SolidWorks 2010 SP1.0 you'll have to hold that control key before you double click on edit reference files, and Stewy...nice bounce around.

Cheers,

Bob McGaughey,CSWP

Regional Technical Manager

Computer Aided Technology

Green Design!

Making sure products designed are environmentally friendly and meet all government regulations is a big part of engineering. Many states are passing laws to make sure companies doing business there are developing sustainable products. e.g. the state of California passed a regulation to make trailers coming into California aerodynamic. The goal is to minimize drag, leading to reduced fuel consumption and thus lower greenhouse gas emissions.

SolidWorks has come out with a new tool called "Sustainability". Users can study environmental  impact material, manufacturing process, and location on design.  SolidWorks Sustainability distills the results into environmental impact factors, such as

Carbon Emissions Carbon dioxide and equivalents, such as carbon monoxide and methane, that are released into atmosphere, resulting in global warming.

Energy Consumed All forms of energy consumed over entire life cycle of product.

Air Acidification Air pollution primarily due to burning of fossil fuels, eventually leading to acid rain.

Water Eutrophication Contamination by fertilizers that travel through rivers to coastal waters, resulting in algae blooms and eventual killing of all sea life in certain coastal regions.

Using Sustainability, users get real time feedback on environmental impact of materials from a dashboard. Also, users can look for a similar material and then compare results.

 

There are two versions of Sustainability

SolidWorks SustainabilityXpress

Handles part documents and is included with every license of SolidWorks for free.

SolidWorks Sustainability

Handles part and assembly files, also supports multiple configurations, and has added environment impact factors.

I believe SolidWorks is keeping ahead of the curve, making sure they are practicing what they preach. Asking designers to think differently and keeping innovation at the forefront.

Rajat Trehan

Product Manager - Design Validation 

Computer Aided Technology Inc.
  

2010 SNL install selection from the Installation Manager

Just a quick note for now. Some calls and confusion over where the SNL manager is installed from. Slightly different appearances to downloaded and DVD versions, both have same selection. Really, it's in the same place as last year but easy to skip over. Now the SW installation manager shows the page we need first. We MUST select the Administrative image and server products. Unless you are creating an admin image you want to make sure that the selections for that are cleared. If you are not installing PDM on this server un-check that as well.

Here it is from the download screen.

Here it is from the DVD version.

John Van Engen
CATI Tech Support

Does SolidWorks 2010 "Just work better"?

So the first round of the CATI live launch events are complete.  Looking at some of the slides from the What's New presentation there is a open ended question. Does SolidWorks 2010 "Just work better"?  I told myself when I was presenting this slide that I would need to keep my eyes open for an example of it just working better.  So here is the first one that I found.  It has to do with the sections capability of 2009 vs 2010.  Have a look at the video and let me know what you think.

 

 

Temperature Analysis

Thermal analysis helps users account for temperature change in the  environment. Typically there are two types of thermal analysis

(a) Static -boundary conditions do not change with respect to space and time. In a static thermal test users are solving for equilibrium given a set of environment conditions.

(b) Transient - boundary conditions change with respect to space and time. In a transient test users are solving conditions that a varying e.g power, temperature etc.

An easy way to differentiate would be using a practical example.  Let's say you are interested in analyzing a spark plug. This test can be done in two ways (a) solve for temperature distribution in the spark plug in usage a.k.a static (b) solve for temperature distribution in the spark plug a minute after the engine has started a.k.a transient. We will solve for both these cases and understand differences between static and transient analysis.

Material Properties : To conduct thermal analysis , users need to know : thermal conductivity, density and specific heat for different components involved.

There are three mechanisms for Heat Transfer : Conduction, Convection and Radiation

Conduction is the heat transfer mechanism in which thermal energy transfers from one point to another through the interaction between the atoms or molecules of the matter. Conduction occurs in solids, liquids, and gasses.

Convection is the heat transfer mode in which heat transfers between a solid face and an adjacent moving fluid (or gas).

Thermal Radiation is the thermal energy emitted by bodies in the form of electromagnetic waves because of their temperature. All bodies with temperatures above the absolute zero emit thermal energy. Because electromagnetic waves travel in vacuum, no medium is necessary for radiation to take place.

In the case of spark plug, let us say we have information on average temperature around the combustion chamber.  Spark Plug is surrounded by air and hence loses heat at a constant rate. We will assume the (convective coefficient) rate at which spark plug is being cooled by surrounding air. We are looking for operating temperature of spark plug. In this case, the temperature in combustion chamber and air convection cooling rate act as inputs, the output would be temperature distribution pattern in the plug.  An important point to note: User has to mention convection co-efficient for static thermal tests. Can you guess why??? The software is solving for equilibrium between heat input  and constant cooling. This equilibrium will never be reached unless we provide a cooling rate. ....

 

For transient analysis; let us say we know the rise in heat power as the engine is ramping up for the first one minute. This change in power will act as an input. For transient analysis it is not necessary to mention convection coefficient, but it is required to mention an initial temperature or starting point for calculations.

 

Using thermal simulation users can quickly account for temperature change. But this explains only one part of the story...predicting temperature change under applied heat load. What about the structural requirements under this applied load?? Once temperatures are calculated in thermal analysis users can use these values as a thermal load in structural simulation. Thus calculating deformation, factor of safety due to temperature change. Thus giving a complete picture and help users understand complete  component behavior under thermal loads.

Rajat Trehan

Product Manager - Design Validation

Computer Aided Technology Inc.