Software 3D-simulates vibration, acceleration on PCB systems

A new vibration and acceleration simulation package for printed circuit board (PCB) systems is said to accurately predict results ordinarily available only through traditional, physical HALT (highly accelerated lifecycle testing). The Mentor Graphics Xpedition product is said to augment mechanical analysis and physical testing by introducing virtual accelerated lifecycle testing much earlier in the design process. It is billed as the industry’s first PCB-design-specific vibration and acceleration simulation solution targeting products where harsh environments can compromise product performance and reliability, including the military, aerospace, automotive and industrial markets.

Traditional, physical HALT (highly accelerated lifecycle testing) typically takes place just before volume manufacturing and requires expert technicians. Bridging mechanical and electronic design disciplines, the Xpedition product is said to provide vibration simulation significantly faster than any existing method. This results in increased test coverage and shortened design cycles to ensure product reliability and faster time to market.

The Xpedition component modeling library is said to be the most extensive in the industry, comprised of over 4,000 unique 3D solid models which are used to create highly defined parts for simulation. The 3D library allows users to match geometries to their 2D cell database. Designers can assemble the parts models on board and automatically mesh them for performance analysis, including stiffeners and mechanical parts. The system modeling tool is ultra-fast since it can model over 1,000 components per minute.

The Xpedition technology provides an automated environment leveraging a finite-elements engine developed for quick, accurate analyses. Unlike other tools, the technology is optimized for the PCB layout designer, enabling simulation and improved redesign at the desktop. A pre-processor and wizard sets-up simulations for fast and accurate virtual prototyping. A patented post-processor technology lets designers quickly see high-failure-probability components and analyze boundary conditions, material properties, and environment profiles.

The Xpedition product can also perform acceleration stress simulation for specialized applications. This feature provides safety factor simulation for constant acceleration conditions, pin-level Von-Mises stress, detailed stress and deformation plots, and three- axes user-defined force vector (X, Y, Z) simulation. These features are developed for safety-critical applications such as those targeting the mil-aero markets.

Key Features:  Simulate during the design process to determine PCB reliability and reduce field failure rates.  Detect components on the threshold of failure that would be missed during physical testing.  Analyze pin-level Von-Mises stress and deformation to determine failure probability and safety factors.  Automated simulation setup, significantly faster than existing methods.

The Xpedition add-on product is available today. For pricing, consult a Mentor Graphics sales representative or call 1-800-547-3000. Additional product information can be found on the website.