People who have used SolidWorks Simulation, and indeed other FEA software, will be aware that sharp re-entrant corners will cause high stress concentrations in a final stress plot. Increasing the mesh in this area will only serve to increase the stress intensity. Small fillets are usually applied, or in some cases the mesh is coarsened in this area.
Many models have inside or re-entrant corners which can cause high stress concentrations
High Stress Concentrations are also caused by incorrect boundary conditions (aka loads and restraints).
Example 1 – Tensile Test
The video on the following page compares Hand Calculations to SimulationXpress and SolidWorks Simulation with Reference Geometry restraints, for a tensile test of a steel cylinder.
Simply putting a “Fixed” restraint on a face (which a lot of people just do) is a blind and often an incorrect approach and can cause high stress concentrations. A better method involving using a “Sliding” restraint combined with a Reference Geometry condition can be used to overcome these high stress concentrations.
Putting a "Fixed" restraint on a face may cause high stress concentrations.
Example 2 – Use a Soft Material
The following article proposes to use a “springy foundation pad” with a low youngs modulus and low poisson’s ratio, attached to the part you want to secure. The springy material will absorb high stress concentrations when a force is applied. Link -> http://www.capinc.com/2011/04/06/imaginary-materials
Use a springy foundation pad part or body attached to the part being loaded
I recently came across a Youtube video showing how in SolidWorks 2007, a drawing view (2D) could be copied and pasted directly from SolidWorks into DWGEditor (now called 2D Editor). As DraftSight is the new free 2D CAD Tool, I wanted to see if this would work in SolidWorks 2011 and Draftsight.
It does work, and very nicely.
If you want to quickly copy a SolidWorks Drawing View into Draftsight/AutoCAD/DWG without having to go Saving As a DWG etc. this tip will save time.
Copy from SolidWorks to DWG / Draftsight
Select the Drawing View in SolidWorks
Edit (drop-down menu) -> Copy to DWG Format
Go to Draftsight
Edit (drop-down menu) -> Paste
Left Click to Paste the View into Draftsight
Select Drawing View in SW -> Edit Menu -> Copy to DWG Format -> Go to CAD -> Edit -> Paste
Of course the reverse is equally true. You can copy and paste directly from Draftsight DWG into a new Sketch in SolidWorks. CTRL+C and CTRL+V make things nice and easy.
Copy from DWG / Draftsight to SolidWorks
Window select what you want to copy in Draftsight/CAD
Go to SolidWorks
Create a New Part
Create a New Sketch
Left Click into the Graphics Area
Just a quick word on draftsight. It is a free 2D CAD Program which will let you open and save all version of AutoCAD. Its interface is very similar to AutoCAD with layers, grid, layouts and object tracking (called etrack). I remember using AutoSketch in 1999 which I got from a Computer Magazine, to draw up go-kart plans. If I had Draftsight back then, things would have been a lot easier. Draftsight is available for Windows, Apple MACs and also Ubuntu Linux. Head to www.draftsight.com to download your copy now.
I was recently trying to install SolidWorks 2011 on Windows 7 x64 and it failed. Typically I’d expect problems with XP x64, but not with Windows 7 with .Net and Windows Installer all part of the OS.
The SolidWorks Installation Manager provided a link to the Installation Logs ( C:\Users\username\AppData\Roaming\SolidWorks\Installation Logs\2011 SP0 ). Looking at the latest txt file ( SummaryIMLog_20110.txt ) I saw “Installation Error 1719” and “Installation Error 1603”.
I also looked at the Windows Event Viewer, and saw the failed installation and the Error 1719. See image below.
First Attempted Solution
As Windows Installer v5 is part of Windows 7, it would not show up in Add/Remove Programs to do a repair (as I would have done for XP).
Make sure that the Windows Installer service is running (Control Panel -> System and Security -> Administrative Tools -> Services)
As on the SW KB, I had tried registering and reregistering Windows Installer.
I even browsed directly to the SolidWorks setup (bypassing the Installation Manager), but it immediately threw up the 1719 error and stopped.
Final Solution to 1719 Installation Error
Start, then Run, then type regedit
Go to HKEY_LOCAL_MACHINE\SYSTEM\CURRENT CONTROL SET\SERVICES\MSIserver\WOW64
Right click on WOW64, then select Modify
Set Value Data to 0 (mine was set at 1) and Base should be Hexadecimal
(see below image for screenshot)
Close the Registry Editor
Reboot the PC
Command Prompt: net stop msiserver and net start msiserver
When changing the templates that the novice interface uses, it was a little tricky. It turns out that the Novice Interface selects the first alphabetical template.
I had thought it would have used the Default Templates under Tools -> Options -> Default Templates, but I was mistaken.
So if your templates are stored in: C:\ProgramData\SolidWorks\SolidWorks 2011\templates, and you want a new Drawing, it will select the first alphabetical drawing template (*.drwdot) in that folder.
To verify and check where your templates are stored: Tools -> Options -> File Locations -> Document Templates
Personally I always use the Advanced interface, but to each his/her own.