scholarly journals Concurrent Process-Product Design Optimization Using Coupled Nonlinear Finite-Element Simulations

10.5772/47852 ◽  
2012 ◽  
Author(s):  
Ali Najafi ◽  
Masoud Rais-Rohani
Keyword(s):  
Finite Element ◽  
Design Optimization ◽  
Product Design ◽  
Finite Element Simulations ◽  
Nonlinear Finite Element ◽  
Concurrent Process ◽  
Process Product

A Compliant Transmission Mechanism With Intermittent Contacts for Cycle-Doubling

2006 ◽  
Vol 129 (1) ◽  
pp. 114-121 ◽  
Author(s):  
Nilesh D. Mankame ◽  
G. K. Ananthasuresh
Keyword(s):  
Finite Element ◽  
Conceptual Design ◽  
Finite Element Simulations ◽  
Nonlinear Finite Element ◽  
Transmission Mechanism ◽  
Input Frequency ◽  
Length Scales ◽  
Wide Range ◽  
Macro Scale ◽  
Functional Prototype

A novel compliant transmission mechanism that doubles the frequency of a cyclic input is presented in this paper. The compliant cycle-doubler is a contact-aided compliant mechanism that uses intermittent contact between itself and a rigid surface. The conceptual design for the cycle-doubler was obtained using topology optimization in our earlier work. In this paper, a detailed design procedure is presented for developing the topology solution into a functional prototype. The conceptual design obtained from the topology solution did not account for the effects of large displacements, friction, and manufacturing-induced features such as fillet radii. Detailed nonlinear finite element analyses and experimental results from quasi-static tests on a macro-scale prototype are used in this paper to understand the influence of the above factors and to guide the design of the functional prototype. Although the conceptual design is based on the assumption of quasi-static operation, the modified design is shown to work well in a dynamic setting for low operating frequencies via finite element simulations. The cycle-doubler design is a monolithic elastic body that can be manufactured from a variety of materials and over a range of length scales. This makes the design scalable and thus adaptable to a wide range of operating frequencies. Explicit dynamic nonlinear finite element simulations are used to verify the functionality of the design at two different length scales: macro (device footprint of a square of 170mm side) at an input frequency of 7.8Hz; and meso (device footprint of a square of 3.78mm side) at an input frequency of 1kHz.

scholarly journals Design optimization of gate system on high pressure die casting of AlSi13Fe alloy by means of finite element simulations

Procedia CIRP ◽  
2020 ◽  
Vol 88 ◽  
pp. 509-514
Author(s):  
Mohamad El Mehtedi ◽  
Tommaso Mancia ◽  
Pasquale Buonadonna ◽  
Leonardo Guzzini ◽  
Enrico Santini ◽  
...  
Keyword(s):  
Finite Element ◽  
High Pressure ◽  
Design Optimization ◽  
Die Casting ◽  
Finite Element Simulations ◽  
High Pressure Die Casting ◽  
Gate System ◽  
Pressure Die Casting

Forming new steel-framed openings in load-bearing masonry walls: design methods and nonlinear finite element simulations

2019 ◽  
Vol 17 (5) ◽  
pp. 2647-2670 ◽  
Author(s):  
Lorenzo Billi ◽  
Francesco Laudicina ◽  
Luca Salvatori ◽  
Maurizio Orlando ◽  
Paolo Spinelli
Keyword(s):  
Finite Element ◽  
Design Methods ◽  
Finite Element Simulations ◽  
Nonlinear Finite Element ◽  
Masonry Walls ◽  
Load Bearing
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