ANSYS資料 ANSYS120培訓(xùn)資料 ANSYS_Explicit_Dynamics_Capabilities_Short

1、ANSYS Explicit Dynamics Solutions Overview,ANSYS Explicit Dynamics - Outline,Introduction Problems Well Suitedfor Explicit Solutions Terminology Multiple Solution Methods Material Models ANSYS Explicit Dynamics Products ANSYS LS-DYNAANSYS Explicit STRANSYS AUTODYN Application Areas Example Simulatio

2、ns Space Debris Impact (Hypervelocity) Airplane Impact Drop Test Laptop Computer Sheet-metal Forming Door Panel Explosion Near a Bridge Summary,Short duration localized phenomena Transient dynamic wave propagation Gases, Liquids, Solids and their Interaction (FSI) Nonlinear Material behavior Structu

3、ral behavior Contact/Interaction Extreme loadings Extreme deformations Large strains & strain rates,Problems Well Suitedfor Explicit Solutions,Terminology,Nonlinear Response: Material effects: materials involved in the products have a nonlinear behavior. Typical examples include plasticity, hyper-el

4、asticity and failure Linear Response: the system response varies linearly with the loads applied to it. Explicit Solution time is an independent variable that is explicitly advanced according to a stability criteria limited by the speed of shock waves in the smallest element Time-step the time incre

5、ment used to advance the value of time from one computational cycle to the next (not a constant) Local Response From shock waves created by impact or explosion Resulting in large deformation and material failure Often involves Fluid Structure Interaction (FSI) Implicit Solution time is not an indepe

6、ndent variable and is implicitly advanced according to convergence criteria. State variables being computed are not time dependent.,Multiple Solution Methods,Parts are assigned to a Solver The Solver that best represent the physics of each material is used Parts interact with Contact - interaction B

7、onding - joins Fluid Structure Interaction (FSI) - coupling Solvers can be used in any combination in a single simulation,Lagrange (structures) Euler (fluids) ALE(auto remesh) SPH (brittle),Material Models,Material ClassMaterial Response,ANSYS Explicit Dynamics Products,Application Areas,Impact high

8、 speed Space debris hypervelocity Bird strike (Aerospace) Airplane impact (Homeland Security) Train impact (Transportation) Impact slow speed Drop test (Electronics & Manufacturing) Rivet/Crimping (Manufacturing) Sport equipment Drilling (Mining) Penetration Bullet (Ballistics) Ceramics and Concrete

9、 HYDRAM (Vulnerability) Fragmentation RPG (Defense) Hand grenade Natural fragmentation,Explosives Ignition and growth Interior Ballistics & Gas Flow EFP Shaped charge (Oil and Gas) Perforation gun Blast timing (Mining) Explosive forming Explosive Loading Ship Submerged vessel (Defense) Bridge (Homel

10、and Security) Inside building Outside building (Homeland Security) Bus window Glazing High Pressure Loading PWR pipe burst Pressurized water container,Space Debris Impact (Hypervelocity),Airplane Impact,Experiment Simulation,Drop Test Laptop Computer,Sheet-metal Forming Door Panel,Explosion Near a B

11、ridge,Summary,Technology advances have resulted in complex products Increasing competition requires optimization of manufacturing processes and product functionality ANSYS suite of products has enabled the simulation of intricate products and their manufacturing quickly, with minimum effort and labor costs Improvements in software performance make it possible to simulate these complex problems in greater detail with higher accuracy Measurements not possible experimentally can be made with simulation Explicit dynam