Process Integration and Optimization of ICME Carbon Fiber Composites for vehicle lightweighting: a preliminary development
Different from the Sheet Molding Compounds (SMC) structure, the unidirectional (UD) structure (laminate) has multiple layers, and each layer has anisotropic properties. The layout of each component in the vehicle structure needs to be optimized in order to achieve the optimum structure performance such as stiffness, durability, NVH, and safety. he multi-layer UD structure optimization is implemented on the platform of modeFRONTIER.
Scaling Parameter for Fatigue Delamination Growth in Composites under Varying Load Ratios
The aim of this paper in aerospace applications, is to develop a scaling parameter that can account for the effects of fiber bridging on the growth behavior of delamination cracks under fatigue loading. An inverse method has been developed to determine the traction stresses acting in the crack wake. Static and fatigue experiments were carried out on IM7/977-3 composite laminates.
Designing the laser heat treatment for the deep drawing of Al alloys by means of an optimization loop
In this study, the effectiveness of heat treatment before the stamping process was numerically investigated for the deep drawing of an Al-Mg alloy, coupling a 2D FE model with the optimization platform modeFRONTIER. This work investigates the effectiveness of this new approach to optimize the localized heat treatment of the flange zone. The maximum Limit Drawing Ratio implementing the heat treated blank was predicted.
Design of a Meta-Material with Targeted Nonlinear Deformation Response
This thesis aims to demonstrate the possibility of designing a meta-material to match a nonlinear deformation response. Application of this method was successful in generating a meta-material to meet the response of the rubber pad in an M1 Abrams tank. The optimization method using modeFRONTIER can serve as a framework for future designers to develop meta-materials for nonlinear targeted responses
Identification of strainrate dependent hardening sensitivity of metallic sheets under in-plane biaxial loading
The objective of this thesis was to propose biaxial tensile tests on a cruciform specimen to identify strain-rate dependent hardening models of sheet metals from quasi-static to intermediate strain rates. The in-plane biaxial testing procedures and parameter identification strategy have been validated on AA5086 and applied to identify rate-dependent hardening laws for DP600 steel. The optimization procedure was carried out in modeFRONTIER.
Use of post-consumer scrap in aluminium wrought alloy structural components for the transportation sector
This paper discusses the aspects of possible use of postconsumer scrap in high-end products based on aluminium wrought alloys. The paper describes results from the EU FP7 Project “SuPLight”. The project addressed new industrial models for sustainable lightweight solutions, reverse logistics, Life Cycle Analysis and application of advanced optimization algorithms with modeFRONTIER and simulations for product and alloy design.
Identification of friction coefficients and strain-compensated Arrhenius-type constitutive model by a two-stage inverse analysis technique
A two-stage inverse analysis technique is proposed to identify the friction coefficients during hot compression test of aluminum alloy AA6N01 and its material parameters in the strain-compensated Arrhenius-type constitutive model. By means of modeFRONTIER, FEM simulation and error calculation are integrated in this study.
Thermal Analysis of a Diesel Piston and Cylinder Liner using the Inverse Heat Conduction Method
This Master’s thesis developed a thermal analysis model of a diesel piston that is used in Volvo Cars engines, which enhances the possibilities to determine the complete thermal loads of the car engine and can be used as a boundary condition when performing combustion CFD-simulation.
Multi-objective optimization of oblique turning operations
Multi-objective optimization of oblique turning operations while machining AISI H13 tool steel has been carried out in this study using the FEM method and modeFRONTIER's multi-objective genetic algorithm MOGA-II. The objective is to minimize main cutting force (force component in the cutting speed direction) and tool–chip interface temperature as both are prime contributors for the machining performance in terms of tool wear and surface integrity of the workpiece.
A CFD-based multidisciplinary optimization of aeroelastic systems with coupled reliability constraints
Designing aeroelastic systems with maximum reliability is studied in this paper using an AGARD 445.6 aircraft wing. Applications of RBDO techniques with a multidisciplinary code coupling approach based on high-fidelity CAD, CFD and CSD softwares and fluidstructure interface is presented with the aim of constructing a fully automatic design framework for aeroelastic optimization problems.