MARCH 2 0 0 7 IN F O R M ATI O N WWW.FEAINFORMATION.COM LSTC Presentation a t 18th HP CAE Symposium IBM IBM SYSTEM X BLADECENTER SOLUTIONS Henry H. Fong FROM FEA TO MCAE TODAY A 40-YEAR PERSONAL ODYSSEY P a r t 1 FEA INFORMATION RESOURCE MAGAZINE FeaInformation.com 1 New Participant Introduction: Full Company Information will appear in the April Issue CARHS – “Since 1994 we have been working with the leading automobile manu- facturers worldwide. We know the engineering processes and tools in the industry in great detail. Our core business is offering state-of-the-art products and services in the field of Vehicle Safety: Simulation services for the internal and external safety of vehicles. Innovative engineering methods and tools. Extensive seminar programme and SafetyKnowledge.” For Complete Information visit: CARHS. Linux Networx – “Linux Supercomputing is our only business. That means we fo- cus exclusively on solving our customers' toughest supercomputing challenges. For nearly a decade Linux Networx has delivered supercomputing excellence. We blend the price performance advantage of Linux clusters with real-world super- computing expertise and innovation.” For Complete Information visit LNXI ARUP – INDIA - nHance Engineering Solutions Pvt Ltd was established in 2004 to provide software development resources to Oasys and to Arup divisions. Distribu- tors of the Oasys pre-and post-processing software, they will additionally distrib- ute LS-DYNA, LS-OPT and LS-PrePost Series: From FEA To MCAE Today – A 40-Year Personal Odyssey – Part 1 of 3 by Henry H. Fong, San Francisco, Caifornia. Sincerely, Art Shapiro [email protected] Marsha J. Victory [email protected] FeaInformation.com 2 Table Of Contents 01 Announcements 02 Table of Contents 03 Featured AVI – Courtesy of Gaurav Nilakantan 04 LS-DYNA Publication 06 LS-PrePost Update 08 LSTC Training Classes – April, May, June 09 TopCrunch Participant Listed Benchmarks 10 HP – LSTC presentation at 18th Annual HP CAE Symposium 11 HP– Experience LS-DYNA®by the hour… FREE! 12 Yahoo Yammerings 15 From FEA to MCAE Today by Henry H. Fong – Part 1 of 3 23 LS-DYNA and Other Worldwide Events 24 ARUP – Distributor of LS-DYNA in India 25 2nd ANSA & µETA International Congress 26 DYNAmore Training and Event Annoucements 27 IBM – HPC Solutions for CAE 29 MSC.Software Quick Product View – Part 1 31 ANSYS – News Release – ANSYS Icemax 33 Industry News Brief – AMD - NEC 34 Engineer’s Market Place 36+ Resource Pages FEA Information Inc. & News: FEA Information News: Editor Art Shapiro Technical Writers: Graphic Designer Dr. David Benson Wayne L. Mindle Dr. Ala Tabiei Business Manager Uli Franz Trent Eggleston Suri Bala President Marsha J. Victory Writing Consultants: Steve Pilz – Reza Sadeghi FeaInformation.com 3 LS-DYNA Featured AVI Complete AVI’s can be viewed at: www.feainformation.com – top bar link “AVI Lib” AVI 204 Side collision - light weight truck Courtesy Gaurav Nilakantan - Univ. Delaware AVI 204a Oblique crash - light weight truck – guardrail Courtesy Gaurav Nilakantan - Univ. Delaware FeaInformation.com 4 LS-DYNA Publication Abstract/Introduction Updated information may be available. Contact the paper author. Chosen from the 9th International LS-DYNA Users Conference 2006 The Complete Paper: on FEA Publications Side Bar Link: “Featured” A High Strain Rate Model with Failure for Ice In LS-DYNA Kelly S. Carney – NASA Glenn Research Center – USA David J. Benson – Univ. of California, Sand Diego – USA Paul Du Bois – Germany Ryan Lee – The Boeing Company – USA Abstract rately model the structural response of Modeling the high velocity impact of ice the vehicle, and an accurate model for was a requirement in the safety calcula- ice. Low cost PC clusters have provided tions for the return-to-flight of the Space the required computer power. Finite Shuttle on July 26, 2005. Ice, however, element methods have advanced dra- is not a common structural material and matically since DeWolfe's investigation. commercial finite element programs did- There has been, however, little effort n't have any appropriate models. A phe- previously in the development of a con- nomenological model with failure was stitutive model for ice that can be used developed to match experimental ballis- in finite element calculations. tic tests. The model has a relatively small number of material constants, The Columbia Space Shuttle tragedy mo- most of which have been measured ex- tivated a large scale safety review of the perimentally. A description of the model Space Shuttle, and included in that re- and comparisons of calculations to ex- view was a requirement for certifying the periments are presented. ability of the leading edge of the wing to safely sustain impacts of various types of debris [2]. The leading edge is made of Introduction carbon-carbon composites, with each The destructive effects of the impact of section costing over one million dollars. ice at high speeds is well known. For Given the wide range of debris, impact man-rated vehicles, experiments are locations, and velocities, and the many usually required to certify the safety of months it takes to produce a single the design. Jet engines, for example, are panel, a complete experimental test pro- required to pass ice ingestion tests by gram would be prohibitively expensive the FAA. Concern about the impact of ice and could not be accomplished in a on the Space Shuttle dates back to at timely manner. Finite element analysis, least to the 1983 test program described carefully validated by a series of experi- by DeWolfe [1]. ments, was therefore required to certify the Space Shuttle for flight. Analyses were rarely carried out previ- ously for many reasons, including the After calculating the relative velocity of absence of sufficient computer power, the leading edge and debris, analyses software that could handle both the ex- were limited to low density materials treme deformations of the ice and accu- that would rapidly decelerate in the at- FeaInformation.com 5 mosphere. Dense objects, such as bolts, space industry, is rarely subject to high are not believed to endanger the leading strain rate impact conditions. Although edge since the relative impact velocity ice has been studied extensively, e.g., would be low. Low density materials, [3], only a very few efforts have been such as the foam that brought down Co- made to model it numerically at high lumbia, rapidly decelerate to the point strain rates [4,5]. Attempts to use exist- that the Shuttle flies into the debris at a ing models, including some intended for velocity up to 3000 ft./s. Ice decelerates brittle engineering materials, demon- rapidly enough to be considered a poten- strated the need for an improved model. tial problem, with a maximum expected impact velocity of up to 1000 ft./s. The ice model presented here was devel- oped under the deadlines required to re- Constitutive models for reinforced car- turn the Space Shuttle to flight. It is bon-carbon composites and the low den- phenomenological in nature, and its sity foams covering the external fuel value was judged based on how well it tank are reasonably mature, and valida- modeled the ballistic experiments. As far tion experiments using the shuttle mate- as possible, the material parameters rials demonstrated their accuracy. Ice, have been measured by experiments however, is not a commercial structural that are independent of the experiments material, and aside from high velocity used to validate the accuracy of the ice impact situations of interest to the aero- model. FeaInformation.com 6 LS-PrePost® Online Documentation Update www.lstc.com/lspp Copyright © 2007 LSTC FeaInformation.com 7 LS-PrePost® Continued 10-Mar - Added Record Orient option to Toggle Menu to suppress writing of orienta- tion commands to Command File 28-Feb - Tutorial 16 added to online documentation (Intro to Block Mesher) 24-Feb - Update of SphGen Interface LS-PrePost® was designed to provide the following core functionalities: Full LS-DYNA® keyword support LS-DYNA model visualization LS-DYNA model creation and editing Advanced post-processing LS-PrePost's main post-processing capabilities include states result animation, fringe component plotting, and XY history plotting. LS-PrePost is also capable of importing and exporting data in a number of common formats. The figure on the right illustrates a sampling of those that a typical user might find most useful. FeaInformation.com 8 LSTC California & Michigan Training Classes April – May – June A complete list of dates can be found on the LSTC website April 10-13 CA LS-OPT May 01-04 CA Introduction to LS-DYNA June 05-08 MI Introduction to LS-DYNA 12-13 CA Contact 14-15 CA Composite Materials 18-19 CA Material Modeling Using User Defined Options 26-29 CA Advanced – Impact Analysis For Class Details: www.lstc.com FeaInformation.com 9 Participant Benchmarks On TopCrunch. TopCrunch.org For Complete Vendor Submitted Benchmarks Vendor Submitted – QLogic Feb. 15 – March 09, 2007 Cambridge Cluster/ Intel Dualcore Xeon 5160 3.0 32 x 2 x 2 208 neon_refined_revised QLogic InfiniPath IB GHz = 128 Cambridge Cluster/ Intel Dualcore Xeon 5160 3.0 32 x 2 x 1 223 neon_refined_revised QLogic InfiniPath IB GHz = 64 Cambridge Cluster/ Intel Dualcore Xeon 5160 3.0 16 x 2 x 2 293 neon_refined_revised QLogic InfiniPath IB GHz = 64 Cambridge Cluster/ Intel Dualcore Xeon 5160 3.0 16 x 2 x 1 388 neon_refined_revised QLogic InfiniPath IB GHz = 32 Cambridge Cluster/ Intel Dualcore Xeon 5160 3.0 8 x 2 x 2 = 482 neon_refined_revised