I Have the Touch: Check Contact in Workbench Prior to Solving with the Contact Tool

Categories:

Song quotes Peter Gabriel, “I Have the Touch”

The time I like is the rush hour, cos I like the rush
The pushing of the people – I like it all so much
Such a mass of motion – do not know where it goes
I move with the movement and … I have the touch

Looking back I can see a defining moment in my life when about a month after high school graduation two good friends and I drove four hours from home to see Peter Gabriel in concert.  It’s not that the concert was great, which it was, but it was the trip itself.  It was a first foray after high school, a sort of toe dipping into the freedom of adulthood while in a strange pause between graduating in a small town in the same school system with the same kids and starting engineering school in a big city in the Fall.

Wanting contact
I’m wanting contact
I’m wanting contact with you
Shake those hands, shake those hands

What does all that have to do with ANSYS, you ask?  Primarily, it’s hard to get Peter Gabriel’s “I Have the Touch” out of my head whenever I’m working with contact elements.  Someone once said that we are a product of the music of our youth.  While as I’ve gotten older and hopefully wiser I would hope that we are made up of much more than the product of listening to some songs, I do find it true that certain songs from years ago tend to stick in my head.  So, while Mr. Gabriel plays in my head, let’s discuss checking our contact status in Workbench Mechanical.

For those of us familiar with Mechanical APDL, the CNCHECK command has been a good friend for a lot of years now.  This command can be used to interrogate our contact pairs prior to solving to report back which pairs are closed, what the gap distance is for pairs that are near touching, etc.  More recently, this type of capability has become available in Workbench Mechanical by inserting a Contact Tool under the Connections branch.

Let’s take a look at that in version 13.0.  Here we have inserted a Contact Tool under the Connections branch.  It automatically includes the Initial Information sub-branch, with a yellow lightening bolt meaning no initial information has yet been calculated.

image

By right clicking on the Initial Information sub-branch, we can select Generate Initial Contact Results.  The resulting worksheet view provides significant information on all of the defined contact regions.  By default the information displayed for each contact region includes the name, contact/target side, type (fictionless, no separation, etc.), status, number of elements contacting, initial penetration, initial gap, geometric penetration, geometric gap, pinball radius, and real constant set number.  That last value is useful when reviewing the solver output, as it lists contact info per real constant set number of each contact pair (contact region).

image

Further, by right clicking on that table we have the option to display some additional data, or remove fields of data.  The additional fields that can be added are contact depth, normal stiffness, and tangential stiffness.  We can also sort the table by clicking on any of the headings. 

The colors in the table display four possible status values:

Red = open status for bonded and no separation types

Yellow = open for non bonded/no separation types

Orange = closed by with a large amount of gap or penetration

Gray = inactive due to MPC or Normal Lagrange or auto asymmetric contact

image

If we left click on one or more of the contact regions in the table, we can then right click and “Go to Selected Items in Tree.”  This is a convenient way to view a particular set of contact regions in the graphics view.

Any social occasion, it’s hello, how do you do
All those introductions, I never miss my cue
So before a question, so before a doubt
My hand moves out and … I have the touch

So, what do we do with this information?  Ideally it will prevent us from launching a solution that goes off and cranks for a few hours only to fail due to an improper contact setup.  For example, by viewing the initial status for each pair we can hopefully verify that regions that should be initially touching are in fact touching as far as ANSYS is concerned.  If there is an initial gap or penetration, correcting action can be taken by adjusting the contact settings or even the geometry if needed prior to initiating the solution.

Wanting contact
I’m wanting contact
I’m wanting contact with you
Shake those hands, shake those hands

The Contact Tool > Initial Information is another tool we can use to help us obtain accurate solutions in a timely manner.  If you haven’t had the opportunity to use it, please try it out.  I can’t guarantee that it will trigger fond memories, but maybe you’ll have an enjoyable song playing in your head.

Categories

Get Your Ansys Products & Support from the Engineers who Contribute to this Blog.

Technical Expertise to Enable your Additive Manufacturing Success.

PADT’s Pulse Newsletter

Keep up to date on what is going on at PADT by subscribing to our newsletter.


By submitting this form, you are consenting to receive marketing emails from: . You can revoke your consent to receive emails at any time by using the SafeUnsubscribe® link, found at the bottom of every email. Emails are serviced by Constant Contact

Share this post:

Upcoming Events

09/27/2023

2023 AZ Bio Awards

09/26/2023

Experience Stratasys Truck Tour - Houston

09/22/2023

AIAA Rocky Mountain Section Technical Symposium 2023

09/22/2023

Experience Stratasys Truck Tour - Dallas, TX

09/21/2023

Accelerating the Energy Transition through Simulation

09/20/2023

3D Printing vs. CNC Machining - Webinar

09/13/2023

Maxwell Updates in Ansys 2023 R2 - Webinar

09/12/2023

Sandia Science & Technology Park 25th Anniversary

09/12/2023

Experience Stratasys Truck Tour - Tempe, AZ

09/08/2023

26th Annual New Mexico Flying 40 Awards

09/08/2023

New Mexico Tech Summit

09/07/2023

New Mexico Tech Summit

08/30/2023

Structures Updates in Ansys 2023 R2 (1) - Mechanical, Post & Graphics

08/23/2023

Improved Injection Molding with Additive - Webinar

08/22/2023

SPIE Optics & Photonics Exhibition 2023

08/16/2023

Fluids Updates in Ansys 2023 R2 - Webinar

08/04/2023

Experience Stratasys Truck Tour - Salt Lake City, Utah

08/01/2023

Experience Stratasys Truck Tour - Denver Colorado

07/26/2023

Solving Supply Chain Issues with Additive - Webinar

07/25/2023

Arizona Tech Leadership Golf Tournament

07/24/2023

Arizona Tech CEO Leadership Retreat

07/19/2023

System Automation & Optimization Updates in Ansys 2023 R1 - Webinar

07/13/2023

2023 AEROSPACE, AVIATION, DEFENSE AND MANUFACTURING CONFERENCE

07/12/2023

Materials Updates in Ansys Granta 2023 R1 - Webinar

06/30/2023

Turbo Expo 2023

06/29/2023

Turbo Expo 2023

06/28/2023

Turbo Expo 2023

06/28/2023

Revolutionize Packaging Design with Additive - Webinar

06/27/2023

Turbo Expo 2023

06/27/2023

2023 E-MOBILITY AND CLEAN ENERGY SUMMIT

06/26/2023

Turbo Expo 2023

06/21/2023

Optics Updates in Ansys 2023 R1 - Webinar

06/07/2023

LS-DYNA Updates in Ansys 2023 R1 - Webinar

05/31/2023

Driving Automotive Innovation with Additive - Webinar

05/24/2023

Hill Air Force Base Tech Expo

05/24/2023

Structural Updates in Ansys 2023 R1 (3) – Structural Optimization & Ex

05/23/2023

CROSSTALK 2023: Emerging Opportunities for Advanced Manufacturing Smal

05/10/2023

Signal & Power Integrity Updates in Ansys 2023 R1 - Webinar

04/26/2023

Additive Manufacturing Updates in Ansys 2023 R1 - Webinar

04/20/2023

38th Space Symposium Arizona Space Industry

More Info

04/19/2023

38th Space Symposium
Arizona Space Industry

04/19/2023

Additive Aids for Manufacturing - Webinar

04/18/2023

38th Space Symposium
Arizona Space Industry

04/17/2023

38th Space Symposium

04/13/2023

Venture Madness 2023

04/12/2023

Fluid Meshing & GPU-Solver Updates in Ansys 2023 R1 - Webinar

03/29/2023

8th Thermal and Fluids Engineering Conference

03/29/2023

Structural Updates in Ansys 2023 R1 - Composites, Fracture & MAPDL

03/28/2023

8th Thermal and Fluids Engineering Conference

03/27/2023

8th Thermal and Fluids Engineering Conference

03/26/2023

8TH Thermal and Fluids Engineering Conference

03/24/2023

Arizona BioPreneur Conference | Spring 2023

03/22/2023

2023 Arizona MedTech Conference

03/22/2023

Optimize Jigs & Fixtures with Additive - Webinar

03/15/2023

3D Design Updates in Ansys 2023 R1 - Webinar

03/08/2023

Competitive Advantages of 1D/3D Coupled Simulation - Webinar

03/01/2023

High Frequency Updates in Ansys 2023 R1 - Webinar

02/22/2023

Additive Advantages in Aerospace - Webinar

02/15/2023

Structural Updates in Ansys 2023 R1 (1) - Webinar

02/09/2023

IME 2023: MD&M | WestPack | ATX | D&M | Plastek

02/08/2023

IME 2023 MD&M | WestPack | ATX | D&M | Plastek

02/07/2023

IME 2023 MD&M | WestPack | ATX | D&M | Plastek

01/27/2023

Arizona Photonics Days, 2023

01/26/2023

Arizona Photonics Days, 2023

01/26/2023

TIPE 3D Printing | 2023

01/26/2023

Venture Cafe Phoenix Talent Night - Job Fari

01/26/2023

VFS 2023 Autonomous/Electric VTOL Symposium

01/25/2023

Arizona Photonics Days, 2023

01/25/2023

Building A.M.- Utah: Kickoff!

01/25/2023

TIPE 3D Printing | 2023

01/25/2023

VFS 2023 Autonomous/Electric VTOL Symposium

01/24/2023

VFS 2023 Autonomous/Electric VTOL Symposium

01/24/2023

TIPE 3D Printing | 2023

01/18/2023

2023 AZ Tech Council Golf Tournament

12/21/2022

Simulation Best Practices for 5G Technology - Webinar

12/14/2022

Digital Twins Updates in Ansys 2022 R2 - Webinar

12/08/2022

Tech the Halls - AZ Tech Council Holiday Mixer

12/07/2022

Electric Vehicle and Other Infrastructure Update Panel

11/30/2022

SPEOS Updates in Ansys 2022 R2 - Webinar

11/23/2022

Simulation Best Practices for Electronics Reliability - Webinar

11/16/2022

Discovery Updates in Ansys 2022 R2

11/10/2022

VentureCafe Phoenix Panel: Venture Capital in AZ

11/08/2022

2022 GOVERNOR’S CELEBRATION OF INNOVATION AWARDS + TECH SHOWCASE

11/03/2022

VentureCafe Phoenix Panel: Angel Investment in AZ

11/02/2022

High & Low Frequency Electromagnetics Updates in Ansys 2022 R2

10/26/2022

Simulation Best Practices For Chip-Package-System Design & Development

10/20/2022

Nerdtoberfest 2022

10/19/2022

2022 Southern Arizona Tech + Business Expo

10/19/2022

LS-DYNA Updates in Ansys 2022 R2 - Webinar

10/17/2022

Experience Stratasys Truck Tour - Clearfield Utah

10/14/2022

ASU School of Manufacturing Systems and Networks - Formal Opening Cele

10/14/2022

Experience Stratasys Truck Tour - Midvale Utah

10/12/2022

Experience Stratasys Truck Tour - Littleton Colorado

10/06/2022

Fluids Updates in Ansys 2022 R2 - Webinar

10/05/2022

Experience Stratasys Truck Tour - Colorado Springs

09/29/2022

White Hat Life Science Investor Conference - 2022

09/28/2022

2022 AZBio Awards

09/28/2022

Simulation Best Practices for Rotating Machinery Design & Development

09/21/2022

ExperienceIT NM 2022

Search in PADT site

Contact Us

Most of our customers receive their support over the phone or via email. Customers who are close by can also set up a face-to-face appointment with one of our engineers.

For most locations, simply contact us: