Journal of Mechanical Design, Transactions Of the ASME
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Data-Driven Energy Efficiency and Part Geometric Accuracy Modeling and Optimization of Green Fused Filament Fabrication Processes
Journal of Mechanical Design, Transactions Of the ASME - Tập 142 Số 4 - 2020
Abstract Nowadays, increasing awareness of environmental protection has evoked
the adoption of green technologies in design and manufacturing. As a
revolutionizing manufacturing technology that produces components in a
layer-by-layer fashion, additive manufacturing (AM) has followed this trend.
Among a variety of AM processes, fused filament fabrication (FFF) is one of the
most commonly used techn...
Incorporating Moldability Considerations During the Design of Polymer Heat Exchangers
Journal of Mechanical Design, Transactions Of the ASME - Tập 133 Số 8 - 2011
Recently, available formulations of thermally enhanced polymer composites are
attractive in heat exchanger applications due to their low cost and improved
corrosion resistance compared to the conventional metal options. This paper
presents a systematic approach to the design of plate-fin heat exchangers made
out of thermally enhanced polymer composites. We have formulated the design
problem as the...
Dynamic Design of a High-Speed Motorized Spindle-Bearing System
Journal of Mechanical Design, Transactions Of the ASME - Tập 132 Số 3 - 2010
This technical brief presents a dynamic model based on the traditional transfer
matrix method (TMM) and Jones–Harris nonlinear rolling bearing model to study
the effects of the extended structure parameters on the vibration behavior of a
high-speed motorized spindle-bearing system. The first critical speed and the
dynamic stiffness of the high-speed motorized spindle-bearing system are
systematica...
The Degree Code—A New Mechanism Identifier
Journal of Mechanical Design, Transactions Of the ASME - Tập 115 Số 3 - Trang 627-630 - 1993
An important step in the structural synthesis of mechanisms requires the
identification of isomorphism between the graphs which represents the mechanism
topology. Previously used methods for identifying graph isomorphism either yield
incorrect results for some cases or their algorithms are computationally
inefficient for this application. This paper describes a new isomorphism
identification metho...
A Method for the Design of Compliant Mechanisms With Small-Length Flexural Pivots
Journal of Mechanical Design, Transactions Of the ASME - Tập 116 Số 1 - Trang 280-290 - 1994
Compliant or flexible-link mechanisms gain some or all of their motion from the
relative flexibility of their joints rather than from rigid-body joints only.
Unlike rigid-body mechanisms, energy is not conserved between the input and
output ports of compliant mechanisms because of energy storage in the flexible
members. This effect and the nonlinearities introduced by large deflections
complicate ...
Product and Process Tolerance Allocation in Multistation Compliant Assembly Using Analytical Target Cascading
Journal of Mechanical Design, Transactions Of the ASME - Tập 130 Số 9 - 2008
Abstract Tolerance allocation is the process of determining allowable
dimensional variations in products (parts and subassemblies) and processes
(fixtures and tools) in order to meet final assembly quality and cost targets.
Traditionally, tolerance allocation is conducted by solving a single
optimization problem. This "all-in-one" (AIO) approach may not be desirable or
applicable for various reaso...
An Efficient Pareto Set Identification Approach for Multiobjective Optimization on Black-Box Functions
Journal of Mechanical Design, Transactions Of the ASME - Tập 127 Số 5 - Trang 866-874 - 2005
Both multiple objectives and computation-intensive black-box functions often
exist simultaneously in engineering design problems. Few of existing
multiobjective optimization approaches addresses problems with expensive
black-box functions. In this paper, a new method called the Pareto set pursuing
(PSP) method is developed. By developing sampling guidance functions based on
approximation models, t...
Three Dimensional Absolute Nodal Coordinate Formulation for Beam Elements: Implementation and Applications
Journal of Mechanical Design, Transactions Of the ASME - Tập 123 Số 4 - Trang 614-621 - 2001
This part of these two companion papers demonstrates the computer implementation
of the absolute nodal coordinate formulation for three-dimensional beam
elements. Two beam elements that relax the assumptions of Euler-Bernoulli and
Timoshenko beam theories are developed. These two elements take into account the
effect of rotary inertia, shear deformation and torsion, and yet they lead to a
constant...
Review of Metamodeling Techniques in Support of Engineering Design Optimization
Journal of Mechanical Design, Transactions Of the ASME - Tập 129 Số 4 - Trang 370-380 - 2007
Computation-intensive design problems are becoming increasingly common in
manufacturing industries. The computation burden is often caused by expensive
analysis and simulation processes in order to reach a comparable level of
accuracy as physical testing data. To address such a challenge, approximation or
metamodeling techniques are often used. Metamodeling techniques have been
developed from many...
A Model for the Prediction of Churning Losses in Geared Transmissions—Preliminary Results
Journal of Mechanical Design, Transactions Of the ASME - Tập 129 Số 1 - Trang 128-133 - 2007
A series of formulas are presented which enable accurate predictions of churning
losses for one pinion characteristic of automotive transmission geometry. The
results are based on dimensional analysis and have been experimentally validated
over a wide range of speeds, gear geometries, lubricants, and immersion depths.
The case of a pinion-gear pair in mesh has been considered, and it has been
prov...
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