NEi Software Nastran Finite Element Analysis

Nastran Finite Element Analysis and Simulation Software

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Vertebral Screw Model Medical Implant

Vertebral Screw Model

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NEi Nastran provides a wide range of industry-proven solutions for biomedical engineering that enable our customers to evaluate and optimize many performance and reliability aspects of their designs and manufacturing processes. Benefits include: shorter development cycles, FDA regulatory compliance with GSR requirements, faster FDA and CE submission / approval / time to market, enhanced patent protection, improved quality management, increased performance and mechanical reliability, increased product life and durability, improved patient effectiveness, and managed and reduced risk.

Customer Feedback

"Finite Element Analysis has become an important tool to examine designs for their performance under load before a physical prototype exists. The two main advantages we gain through the use of FEA are: shorter time to market and optimized designs to avoid vibrations or to reduce weight and costs. After an extensive evaluation we decided to use NEi Nastran as our solver due to its high accuracy, robustness and productivity."

Thilo Trautwein
Dipl.-Ing. (FH)

NEi Nastran biomedical engineering customers routinely address issues like:

  • Design and deployment of cardiovascular related systems such as vascular stents, catheters, drug delivery systems, pacemakers, defibrillators, heart valve replacements
  • Design and deployment of orthopedic related devices such as knee replacement, hip implants, spinal implants, cartilage and joint replacement, human modeling and virtual biomechanics, biocompatible materials analysis
  • Design of intra-ocular lens implants and general devices
  • Design of dental implants and general devices
  • Design of mechanical connectors commonly used in all types of medical devices
  • Wear and impact simulation to improve durability and reliability of implants
  • Assessment and prediction of injuries
  • Soft tissue and joint modeling
  • Simulating the physiological response of body systems

NEi Nastran product suite key benefits for biomedical engineering:

  • Proven track record demonstrating that NEi Nastran is one of the most trusted products for simulation of complex medical devices.
  • Comprehensive interactive tools necessary for model creation, analysis monitoring, and results evaluation including a state-of-the-art analysis editor.
  • Specialized industry-proven element technologies, including hybrid quad and hex elements, surface and spot weld elements, and dissimilar mesh interpolation elements.
  • High performance processing including advanced parallel PCG iterative, sparse direct, and block Lanczos solvers which allow solutions to large-scale models over 10 million degrees of freedom on inexpensive 32-bit Windows workstations as well as high end 64-bit Linux clusters.
  • Robust contact capability using a 3D surface contact method which easily handles dissimilar meshes between components including frictional effects.
  • Basic through advanced material models including temperature dependent materials, non-linear elasticity and plasticity effects.
  • Substructuring and Modal Reduction allows the creation and reuse of substructures to improve the efficiency of large analyses and provides a convenient method to transfer model data to subcontractors.
  • Submodeling allows in-depth evaluation of particular regions.
  • Multiple subcase capability provides a highly efficient technique to evaluate the response of structures to many different load cases and boundary conditions.
  • Extensive composite material support including, 2D orthotropic, 3D orthotropic, general anisotropic, laminate lay-up definitions, and a wide range of failure criteria.
  • Advanced solution sequences such as linear and nonlinear static, transient dynamic, steady state dynamic, frequency extraction, heat transfer, and other analysis types, provide a choice of appropriate analysis types for different types of simulations.
  • Integration with specialized fatigue applications, such as winLIFE which is available as an add-on to the NEi Nastran product suite and also fe-safe, nCode, Falancs and FE-Fatigue.

Case Studies in Medical Industry

PDFSpinal Implant System by Trautwein Engineering
PDFHuman Spinal Implant
PDFSpinal Implant Fatigue Stress Analysis
PDFAdjustable Lens Mechanism


Conference Papers


Product Demonstration Options and Information

Phone (U.S.): (877) - Nastran
Phone (International): +1 (714) 899-1220
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