Siemens PLM Software Simcenter Nastran Facilitating the development of high-performance, reliable and optimized designs siemens.com/simcenter 2 Product development challenges Choosing the right simulation tools Companies need to consider technology, scalability and integration when evaluating simulation tools: • The right technology confirms simulation can accurately represent the physical environment • Scalable solutions can be adjusted to product complexity, high-performance computing resources and a broad range of users’ skill levels • Integrating with other simulation tools and product development applications is important for developing an efficient and effective computer-aided engineering (CAE) solution “In the aircraft and aerospace business, there is no room for poor quality engineering.” Ben Terrell Perth Engineering Manager Aquila Engineering 3 The Simcenter Nastran advantage Realism Increasing confidence Engineer Continuity innovation Enabling collaboration Productivity Driving engineering Exploration efficiency Delivering insight A premier FEA solver Develop products faster An industry standard for over 40 years, Using Simcenter Nastran for simulation helps Nastran is a finite element (FE) solver for engineers find problems with product designs stress, vibration, structural failure, heat prior to conducting any costly physical tests. transfer, acoustics and aero-elasticity analy- With Simcenter Nastran, engineers can be ses. Manufacturers and engineering suppliers confident their design will work when the in aerospace, automotive, electronics, heavy first physical prototype is tested. machinery, medical devices and other indus- tries rely on Simcenter™ Nastran® software for their critical engineering computing needs so they can produce safe, reliable and opti- mized designs within ever shorter design cycles. 4 Increasing product quality Siemens’ performance Simcenter Nastran enables engineers and engineering vision designers to rapidly evaluate many more Our vision is to deliver engineering design concepts than can be accomplished simulation solutions that drive product with physical prototypes. Simulation performance decisions across the allows engineers to better understand and complete product lifecycle. optimize design tradeoffs for quality, cost Siemens PLM Software has delivered on and performance. this vision by building the Simcenter portfolio. Simcenter helps you go beyond Reduce development and simple verification to performance predic- warranty costs tion by combining simulation, physical Using Simcenter Nastran for simulation is testing and data analytics to spot unfore- credited with significantly reducing seen trends. research and development (R&D) costs because building a computer model and digitally testing performance is cheaper, faster and more effective than the physical prototyping processes it replaces. With increased product quality, companies can also save on potential warranty costs. “Customers in the defense, satellite and commercial aerospace industries are all using Simcenter Nastran, and they provide data to us in the Simcenter Nastran format.” Kristopher Notestine Manager, R&D Damping Technologies Inc. 5 Multiple solution domains – one solver Simcenter Nastran can be used to solve most The availability of nonlinear material models structural analysis problems: linear and realistically characterize plasticity, hyper- nonlinear analysis, dynamic response, rotor elasticity, viscoelasticity and creep behavior dynamics, vibro-acoustics, aero elasticity and of materials. You can also integrate your optimization. The advantage to having all of nonlinear material models with Simcenter these solutions available in a single solver is Nastran. that input/output file formats are the same Contact behavior, a typical nonlinear for all solution types, greatly simplifying effect, is a universal phenomenon and modeling processes. almost all users need it to develop a realistic model. Simcenter Nastran offers robust Linear analysis contact algorithms with advanced formula- Simcenter Nastran features a complete range tions that include effects such as friction, of structural and thermal linear analysis large sliding, temperature dependence functionality: linear static, transient and and time variation. buckling. Distinct material models are avail- able to address material behavior, namely Nonlinear solutions affected by the loading isotropic, orthotropic and anisotropic. order can be handled by the Simcenter Nastran multistep solution capability, which Advanced nonlinear analysis allows users to sequence a set of loads and Simcenter Nastran nonlinear solutions enable boundary conditions. you to address problems as simple as a plastic catch and as complex as a car body roof crush using post-buckling analysis. Depending on the rate of loading, you can use either static or transient nonlinear analysis. “Nonlinear dynamics is a core feature of Simcenter Nastran; it has helped us fill a gap in civil and structural engineering.” Roberto Nascimbene PhD Researcher, Structural Analysis Sector Coordinator Eucentre 6 Detail of the contact surfaces of a pendulum isolator. Flexible bodies within a motion analysis. 7 Integrating specialized software cient coupling method between a structure into the analysis process and acoustic cavity. Simcenter Nastran is well known for being a highly efficient solver for Dynamic analysis basic and advanced noise, vibration and Simcenter Nastran offers complete solutions harshness (NVH) solutions, including solving for problems involving transient, random large modal and fast frequency response loading, shock response and more. Dynamics computations. analysis results are often used as input to other types of analyses, such as motion anal- Simcenter Nastran also supports advanced ysis for flexible bodies. Simcenter Nastran NVH hybrid analysis, which abstracts the provides links to motion simulation tools, dynamics of a component or a subsystem by such as Simcenter 3D Motion, RecurDyn, its matrix representation. Adams, SIMPACK and the MATLAB® environ- ment, to simplify simulation workflows. Noise and vibration analysis Simcenter Nastran offers all the solution types needed for analyzing noise and vibra- tion, including normal modes and direct and modal frequency response, such as an effi- “Today’s advanced NVH analysis applications require seamless integration of special purpose proprietary software tools into the analysis process. Simcenter Nastran has set new standards with access to, and exchange of Nastran finite element data. This enables us to extract maximum benefit from the CAE tools at the heart of the virtual development process.” Dr. Otto Gartmeier Manager, NVH CAE Daimler AG 8 Providing diversified analysis allows you to predict critical speeds and capabilities develop designs that operate safely. Both modal and direct methods can be applied for Acoustics analysis complex eigenvalues, frequency response and Simcenter Nastran enables you to perform a transient response analyses. pure radiation analysis or fully coupled vibro- acoustic analysis of both interior and exterior Aero-elastic analysis acoustic problems. Porous material law, dedi- Aero-elastic analysis enables you to analyze cated acoustic loads and leading functional- structural models in the presence of an air- ities like load-independent acoustic transfer stream. With Simcenter Nastran, you can sim- vectors (ATV) and absorbing automatic ulate static aero-elastic trim analysis, flutter matched layer (AML) support the creation of and dynamic aero-elasticity response applied efficient and lean simulation models that to a variety of unsteady loadings, including lead to rapid noise prediction. gust. As such, it can be applied to the design of airplanes, helicopters, missiles, suspension Rotor dynamic analysis bridges and even tall chimneys and power Simcenter Nastran includes capabilities to lines. predict dynamic behavior of rotating systems subject to rotation-induced gyroscopic and centrifugal forces. Rotor dynamic analysis 9 Evaluating composite designs Composites Simcenter Nastran is at the leading edge of simulating the behavior of products made of composite materials, and provides capabili- ties for continuously developing material models and element types. Strength of composite designs can be evaluated using first-ply failure criteria such as Tsai-Wu or Hoffmann, advanced progressive failure methods or composite delamination methods. Using design optimization techniques, you can essentially develop the optimal ply layup for a design, accounting for thickness, orien- tation and material stiffness. Solid composite element 10 Finding the right combination Optimization Simcenter Nastran offers parameter and Coupled physics topology optimization solutions. The topology In the real world, product behavior is not optimization algorithm finds an optimal determined by a single, isolated physical geometric shape to carry loads or meet domain. Instead, effects from one physical certain responses and/or manufacturing phenomenon will simultaneously impact how constraints. The resulting shapes are often a product reacts to another physical domain. described as “organic” and they can be For example, thermal-mechanical effects are manufactured to fit well with additive crucial to jet engine engineering. Simcenter manufacturing methods. Nastran allows you to analyze thermal con- tact problems that will also impact structural The sophisticated algorithms of Simcenter performance. Basic coupling can be achieved Nastran