structural design exploration of high rise design concepts using genetic algorithms
The adoption of optimization algorithms has been slower in conceptual design compared to the later design phases. The choices made during the conceptual design phase have a large impact on the performance of the result. This research aims to find out why it is so hard to use optimization in conceptual design.
Increasing passive safety performances using an automatic CAE methodology
In the automotive industry, safety requirements are more and more stringent leading to engineering challenges in finding the best tradeoff between crashworthiness performances, structure weight, design and production costs. The goal of the activity is to develop an automatic optimization work flow for a car door. The final objective is to fulfill the safety requirements and obtain the best rating in the pole test.
Design and simulation of additive manufactured structures of three component composite material
Lattice structures have become widespread in many areas. Their obvious advantage is the light weight and significant cost savings of a material. Application of unidirectional composite materials allows preserve the exceptional strength properties of composites in construction regardless of the loading direction. For this reason, the lattice composite structures are actively used in the aerospace industry. The goal of this work is the study of the property change of lattice structures of three component composite materials depending on their parameters, as well as the determination of optimal configurations of these structures.
Multiobjective sizing optimization of seismic isolated reinforced concrete structures
A well-designed base isolation system can largely reduce seismic loadings transferred to the superstructure and it not only enables to immediately reduce the superstructure building cost, but also to reduce the maintenance costs incurred after every earthquake during the building lifetime. To better understand these factors, this paper presents an efficient numerical optimization technique for comparing the responses of a base-isolated and a traditional fixed-base reinforced concrete ordinary building under the same type of solicitations and seismic spectra, as appropriate for each case.
Damage characterization of aluminum 2024 thin sheet for different stress triaxialities
Due to its attractive mechanical properties, aluminum 2024 is widely used in aircraft manufacturing industries, especially as fiber metal laminates, such as GLARE. In the present work, a series of experiments for different stress triaxialities are used to study the ductile damage of Al 2024 considering continuum damage mechanics (CDM).
Optimizing Seat Belt and Airbag Designs for Rear Seat Occupant Protection in Frontal Crashes
Recent field data have shown that the occupant protection in vehicle rear seats failed to keep pace with advances in the front seats likely due to the lack of advanced safety technologies. The objective of this study was to optimize advanced restraint systems for protecting rear seat occupants with a range of body sizes under different frontal crash pulses.
Field Analysis and Multi-objective Design Optimization of E-Core Transverse-Flux Permanent Magnet Linear Motor
Linear motor can drive linear load directly without the rotary-to-linear conversion as needed for its counterpart rotary motor, which have the advantages of high acceleration, high precision and high operating life. Transverse-flux permanent magnet linear motor (TFPMLM) enjoys the additional merits resulting from the transverse-flux structure, such as high force density, high fault-tolerant ability and electromagnetic decoupling. However, the TFPMLM always features a complicate structure and suffers from large magnetic flux leakage. nalyzing the motor efficiently and accurately is one of the key factors for motor’s optimal design.
Application to Short Fiber Reinforced Plastic (SFRP) Microstructure Optimization for NVH improvement
The role of simulation is of critical importance to drive the powertrain design for Noise, vibration, and harshness (NVH) on a Component, Sub-System and System Level.
Model Based System Engineering: From Requirements to Performance Optimization using SysML and modeFRONTIER
Appliances are expected to perform at higher levels due to increased regulatory requirements, greater connectivity, and greater competition in the marketplace. Quick delivery to market in a predictable time is needed to win with consumers before competitors do. Large global companies have to control parts proliferation to create global leverage. These are just a few of the reasons Whirlpool Corporation is taking a model-based System Engineering approach to managing the complexity of designing appliances by using the SysML modeling language.
Crystal Plasticity Modeling and Experimental validation with an orientation distribution function for Ti-7 al alloy
An optimization study is performed to identify the slip system parameters of Ti-Al alloys (Ti-0Al and Ti-7Al) using the available tension and compression experimental data showing the true stress - true strain curves of the alloys.