Centre de ressources SIMULIA

4 th Wind and Drivetrain Conference Multibody Simulation in Wind Energy – From Turbine Design to Detailed Component Load Calculation

E-seminars

As a material supplier, it is our role to understand the behavior and performance of our materials and to support designers and engineers in their optimal use. In this paper we will describe the material behavior of semi-crystalline engineering polymers, illustrated with material test data on Delrin POM and their influence on their fatigue performance, in particular their non-linear elastic (hyperelastic) response, hysteresis, temperature dependence and self-heating effects. These have been included in an in-house tool based on Abaqus for improved prediction of the fatigue performance of engineering polymer parts in real-life conditions.

Customer Papers

The objective of this work is to a) generate robust and physically reasonable Abaqusbased FEA solutions to model multi-step damage processes in laminated composite materials and structures and b) demonstrate their efficiency on representative examples. The examples are focused on scenarios of composites with complex networks of multiple interlaminar damages. Computational implementation is based on cohesive zone modeling approach allowing one to model both damage initiation and growth. Demonstration of computational robustness is shown on cases with increased levels of complexity starting with single damage statements, then with multiple damages, and finally, with probabilistic statements assuming statistical variability of properties representing different damage paths.

Customer Papers

DampIT: A Tool for the Identification of Physical Damping Coefficients of a Multibody System Model

E-seminars

2nd European Multibody User Group Meeting 2017: Comparison of Semi-Analytical Methods for Frame Load Evaluation on a Recreational Vehicle

E-seminars

Real-Time Execution of SIMPACK Models under Simulation Workbench

E-seminars

Defects induced in the fabrication and application of composite laminates have substantial influence on the performance of composite structures. The effects of these undesired defects on the static and fatigue mechanical behavior are very important in the reliability and sustainability assessment. An integrative approach is developed to evaluate the major defects including voids and ply waviness from Computed Tomography (CT) scanning to multiscale modeling. Based on the CT scan results, voids and ply waviness can be captured quantitatively. These defects can be analyzed by using the represented volume element (RVE) model and statistical model in micro scale and their effects on the material properties (stiffness, strength and fracture toughness) are included into the macroscale model using a possibilistic uncertainty model.

Customer Papers

5MW Wind Database and Wind Wizard 4th Wind and Drivetrain Conference 19 April 2018, Hamburg, Germany

E-seminars

rFpro & DS Products: Integrated development software for human and autonomously driven vehicles

E-seminars

Additive manufacturing (AM) has enabled representative models and structures to be produced in a time-efficient manner relative to conventional subtractive manufacturing methods. In general, there has been wide-spread observation of fiber reinforce d polymers improving the overall mechanical property of a part relative to the bulk resin or printed polymer whether the fibers are continuous or discontinuous. The strength and stiffness increases with fiber length; however, both stiffness and strength can be also greatly influenced by the type of AM process by which ultimately defines the microstructure of the material.

Customer Papers

Competitive sailing requires robust part design in order to withstand the higher loads placed on the boat and its components during aggressive racing. At the same time, the designs must be as lightweight as possible to remain within race-class weight requirements. Advanced engineering company iXent was called on by the owner of racing sailboat Alegre 3 to contribute to strengthening and lightweighting a key component design.

Tech Notes

Continuous fiber prepreg tape can be transformed into platelets and used as an advanced compression-molding compound. The resulting prepreg platelet molded composite (PPMC) has a meso-scale heterogeneous structure, which means that the stress concentrations resulting from interactions between individual platelets and semi-laminated composition of the system defines the PPMC effective mechanical properties. In the present investigation, the authors developed a computational finite-element model to simulate the effective stiffness and strength of a PPMC tensile coupon. Progressive failure analysis is used to study the damaged deformation up to ultimate failure in full-sized virtual coupons with explicitly modeled stochastic meso-scale morphology and deterministic platelet size to assess the variability of PPMC stochastic effective mechanical properties.

Customer Papers

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