Systèmes Dassault Can I And How Do Iwith SolidWorks .

3DS.COM Dassault SystèmesCan I and How Do I.withSolidWorks Simulation Tools?Hawk Ridge Systems Simulation Team

3DS.COM Dassault SystèmesAgenda Introductions Presentation Description Presentation Format Your Questions Conclusion Wrap-Up

Introductions3DS.COM Dassault SystèmesThe Hawk Ridge Systems Simulation Team Jared Conway, Simulation Services Manager Glenn Whyte, Simulation Product Manager Damon Tordini, Simulation Applications Specialist Chris Ma, Simulation Engineer

Presentation Description3DS.COM Dassault SystèmesCan I and How Do I.with SolidWorks Simulation Tools?Whether you’re looking to bring SolidWorks Simulation tools intoyour design process or you’re a SolidWorks Simulation user,this is the presentation for you. The panel will field your questionsabout the tools’ capabilities and how-to type functionality questions.

3DS.COM Dassault SystèmesPresentation Format Start with an example/pre-submit question Take a question from the audience (Raise your hand if you have a question) Panel will either answer or research Take another question, answer a researched question or answer a pre-submit question

3DS.COM Dassault SystèmesWe’re Ready, Time to Take Your QuestionsSolidWorks Simulation(FEA) Ground Contact (Cus-DH) Dynamic Bolts (Cus-JP) Fatigue (Cus-DH) Results Convergence (HRS-DT) Submodeling (Cus-DH) Results Convergence (HRS-DT) Convection (SWW-CM) Joints (SWW-GW) Adhesives (SWW-DT) Non-Uniform Pressure (SWWCM)SolidWorks Motion(Kinematics) Component Intraction (Cus-CD)SolidWorks Flow Simulation(CFD)SolidWorks Plastics(Injection Molding) Model Preparation (HRS-CM) Configurations (HRS-CM)SolidWorks Sustainability(Life Cycle) Enable The Addin (HRS-JC)

Component Interaction, Chase D.3DS.COM Dassault SystèmesCan I simulate how hundreds of components interact with each other? Software: SolidWorks MotionAnswer: Yes, no hardcoded limit but it will take time.Explanation: Limited by processing power, solver is single threaded. Simplify assembly as much as possible in advance. Simplify analysis phases, let components settle before moving them. When possible use contact groups to minimize number of contacts. Start with stiff contact like steel and then move to your selected material. Solver suggestions: WSTIFF, low accuracy, low contact resolution,sufficient FPS to capture contact and Impact contact type. Turn off animate while solving option.Back

Ground Contact, David H.How do I simulate realistic ground contact?3DS.COM Dassault Systèmes Software: SolidWorks SimulationAnswer: A virtual wall is the best option. No meshing required. It allowsseparation and interaction the same as no penetration.Explanation: Fixed: Does not allow interface separation verticallyor horizontally. Roller Slider: Does not allow separation. Model Ground, Bonded: Same limitations as fixed plus additional componentmodeled. Model Ground, No Penetration: Ground needs to bemodeled.Back

Configurations, HRS3DS.COM Dassault SystèmesCan I use configurations for different process conditions or geometries? Software: SolidWorks PlasticsAnswer: Yes, but the option needs to be turned on.Explanation: Default settings require 1 file for every configuration or set ofprocess conditions. Enable the option through the SolidWorks Plastics Settings:Help Settings SolidWorks Configuration Integration. To copy the process conditions from an existing analysis:1. Start the Model Manager.2. Copy and paste the setup.3. Name the pasted setup with EXACT same name as your new configuration.Back

Model Preparation, HRSHow do I setup my model for SolidWorks Flow Simulation?3DS.COM Dassault Systèmes Software: SolidWorks Flow SimulationAnswer: From http://blog.hawkridgesys.com/1. Simplify and start simple.2. CTRL Q with verification on rebuild turned on.3. Import diagnostics.4. Tools check.5. Interference detection.6. Flow simulation tools check geometry and leak tracker.Explanation: Common problems: Long solve time, “solver terminated abnormally”, unexplainable results or solvererrors like “face is not lying on boundary between fluid and solid” and “unresolved ”Back

Enable The Add-In, HRS3DS.COM Dassault SystèmesHow do I enable the software? Software: SolidWorks SustainabilityAnswer: Tools Sustainability or on the evaluate tab.Explanation: Not enabled through tools add-ins. Replaces SustainabilityXpress in the tools pull down menu. Sustainability adds the ability to run life-cycle analyseson assemblies in addition to parts and also offers moreinput and output options. Data from PE-International of Stuttgart Germany, providerof software and consulting services in sustainable design andlife-cycle analysis for over 20 years.Back

Dynamic Bolt, James P.How do I model a bolted connection in a harmonic analysis?3DS.COM Dassault Systèmes Software: SolidWorks SimulationAnswer: Currently not possible, would need to be addressed with anonlinear dynamic analysis or simplification in linear dynamic.Explanation: Harmonic analysis is a linear dynamic analysis which inherentlydoes not include nonlinearities such as the no penetrationcontact that is part of a bolt connector definition. Bolts could bemodeled and meshed but contact would be bonded. Springs or softcomponents could act as first-order idealization of contact. Preloadwould be difficult to include. Nonlinear dynamic supports bolt connectors but would requirelong run times and a simulation at each frequency to obtain thesame results as a harmonic analysis.Back

Fatigue, David H.3DS.COM Dassault SystèmesCan I accurately predict the life of my product? Software: SolidWorks Simulation Professional / SolidWorks Simulation PremiumAnswer: Yes, using the fatigue study. For better accuracy, consider a nonlinear study for the event.Explanation: Fatigue analysis allows the user to create a standard linear static stress analysis to represent oneloading event, and then define how many cycles of that load the product will endure. The amount ofdamage, or product life that’s been used up, is shown. The stresses that are calculated in the “event” study can have a major impact on the estimatedproduct life. Nonlinear may predict this event more accurately. Back

Results Convergence, HRS3DS.COM Dassault SystèmesHow do I know that my results are numerically accurate? Software: SolidWorks SimulationAnswer: Using the adaptive mesh capability.Explanation: The h-adaptive mesh capability in SolidWorks Simulation automaticallyrefines the mesh of your model only in the necessary areas and checksthat an acceptable level of error has been achieved. Inaccurate stress results (such as stress singularities) can be discoveredusing this tool. More information at http://blog.hawkridgesys.com.Back

Submodeling, David H.How can I make my complex analysis more efficient?3DS.COM Dassault Systèmes Software: SolidWorks Simulation Professional and PremiumAnswer: Use Submodeling to enhance accuracy and add more complexmesh and conditions to a sub-region of the model.Explanation: Submodeling allows us to transfer loading conditions from a master modelinto a sub-region of that model. In doing so, we can increase mesh density,add more complex conditions and run multiple iterations without theoverhead of the large complex model. In this example, the master analysis (with coarse mesh, bonded contactconditions) takes 30 seconds to run, where the bracket submodel takes 15seconds. I ran a 10-iteration optimization routine on the submodel in halfthe time it would have taken in the master model. Including bolted connections and no penetration contact? 90 minutes torun in the master model, 30 minutes using the submodeling approach.Back

Pressure Distribution, SWW3DS.COM Dassault SystèmesHow do I specify a pressure distribution that varies with height? Software: SolidWorks PremiumAnswer: Non-uniform pressure as a function of x and y.Explanation: SolidWorks has the ability to specify a non-uniform pressuredistribution as a function of x and y. The equation used is p(X,Y) V* (A B*X C*Y D*X*Y E*X 2 F*Y 2), where V is the pressure specified in the input box, A, B, C,D, E, and F are user-specified constants. If the non-uniform pressure cannot be described by the aboveequation, then the face can be split using split lines, and the usercan apply a non-uniform pressure distribution to each resultingface.Back

Convection in Simulation, SWW3DS.COM Dassault SystèmesCan you specify cooling due to convection in Simulation? Software: SolidWorks Simulation ProfessionalAnswer: Thermal simulation, convection boundary condition.Explanation: In a thermal analysis, the user can specify a convection coefficientand ambient temperature on a face or set of faces that is used tocalculate heat transfer due to convection. Convection can also be imported from Flow Simulation. (FloXpressdoes not include this feature but can provide some input on howthe flow behaves)Back

Weldment Joints, SWW3DS.COM Dassault SystèmesHow can I address weldment joints? Software: SolidWorks SimulationAnswer: Depends on connection type.Explanation: When modeling weldments as beams, the members aremodelled as a line element and the joint is a nodeconnecting each line. This is a simple, perfect,approximation. When modeling weldments as solids, the true geometryof the joint is respected, and you can add connectingcomponents like bolts and welds. In a mixed mesh, the shape of the weldment crosssection is imprinted on the solid part, producingaccurate representation of the loading on that joint.Back

Contact Stresses/Forces, SWWHow can I predict when an adhesive will fail?3DS.COM Dassault Systèmes Software: SolidWorks SimulationAnswer: Examine stresses or contact forcesbetween parts.Explanation: Method 1: Leave interface area asbonded, and examine difference innormal or principal stresses across partboundary. Compare to adhesive specs. Method 2: Apply no penetration localcontact set in area of thermal pad andbonded contacts at edges. Examinecontact/friction forces.Back

Conclusion3DS.COM Dassault SystèmesAlways ask the question, there is probably a way. What you see is what you get but always ask the question. Check the documentation, check the KB, check the forum, talk to your VAR or contact HRS. Sometimes you may have to settle on a different approach or relative results but in the long-run it isunlikely that you can’t get something to help you make a design decision. If there is a limitation, submit an enhancement request in the SolidWorks Customer Portal.

Wrap-Up3DS.COM Dassault SystèmesThank You for Attending The presentation will be available on our blog at http://blog.hawkridgesys.com in 1-2 weeks Contact Information simulationservices@hawkridgesys.com 650-230-7006 http://dropbox.hightail.com/hrssimulationservices SolidWorks Flow Simulation Design Challenge (Hands-On), Tuesday at 2:45pm

Software: SolidWorks Motion Answer: Yes, no hardcoded limit but it will take time. Explanation: Limited by processing power, solver is single threaded. Simplify assembly as much as possible in advance. Simplify analysis