...Qiang Zhou; Peter Z. G. Qian; Shiyu Zhou For the design and optimization of multistage assembly processes, a computationally cheap mathematical model that links design parameters with the final product dimensional quality is highly desirable. We propose a systematic approach to building a surrogate...

...Arvind Ananthanarayanan; Leicester Ehrlich; Jaydev P. Desai; Satyandra K. Gupta Creating highly articulated miniature structures requires assembling a large number of small parts. This is a very challenging task and increases cost of mechanical assemblies. Insert molding presents the possibility...

... the kinematic error (KE), contact ratio (CR), average contact ratio (ACR), instantaneous contact teeth (ICT) under different assembly conditions. Besides, the bearing contact and contact ellipse are studied by applying the surface topology method. Three numerical examples are presented to demonstrate...

... approach to the design of plate-fin heat exchangers made out of thermally enhanced polymer composites. We have formulated the design problem as the life cycle cost minimization problem. The integrated design model introduced here accounts for heat transfer performance, molding cost, and assembly costs. We...

... deformation of the screw within the nut using Timoshenko beam shape functions. The new model is shown, via simulation and experiments, to provide more accurate predictions of the natural frequencies of compact and stiff ball screw/nut assemblies compared to the existing models. It is therefore more suitable...

...Abhishek Seth; Judy M. Vance; James H. Oliver This research presents a novel approach to virtual assembly that combines dynamic modeling with geometric constraint-based modeling to support low clearance manual assembly of CAD models. This is made possible by utilizing the boundary representation...

... Manufacturing Technology Symposium , pp. 247 – 254 . Srinivasan , H. , and Gadh , R. , 2000 , “ Efficient Geometric Disassembly of Multiple Components From an Assembly Using Wave Propagation ,” ASME J. Mech. Des. 0161-8458 , 122 ( 2 ), pp. 179 – 184 . 10.1115/1.533567 Gonzalez-Torre...

... a more reliable prediction of the joint behavior both during its initial assembly, as well as under subsequently applied tensile loads in service. The effect of the grip length-to-diameter ratio, joint sizes, underhead contact radii ratio, hole clearance, and plate material/thickness ratio...

...David E. Foster; Raymond J. Cipra This paper examines the problem of finding the assembly configurations (ACs), also called circuits, of spatial single-loop single-DOF mechanisms. All six lower pairs are considered: revolute (R), cylindric (C), prismatic (P), helical (H), spheric (S), and planar (E...

...Zhijun Li; Michael Kokkolaras; Panos Papalambros; S. Jack Hu 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...

... selection, rigidity of specifications and constraints, component sorting in selective assembly, and assembly sequences. Hong , Y. S. , and Chang , T.-C. , 2002 , “ A Comprehensive Review of Tolerancing Research ,” Int. J. Prod. Res. 0020-7543 10.1080/00207540210128242 , 40 ( 11 ), pp...

...) be in serial sequence, (iii) be the adjacent kinematic pairs for the successive genes that have the identical type, and (iv) have the resulting cell that is available and applicable in reality. These can be taken as gene aggregation rules . 06 06 2007 17 11 2007 20 05 2008 assembling...

...Sayed A. Nassar; Xianjie Yang In this paper, the evolution equations of the bearing and thread friction coefficients are proposed based on mechanical behavior of the bolted joint assembly. The study shows excellent correlation between the proposed model and the experimental results...

... of a mapping from all possible locations for the features in the cluster. A picture frame assembly of four parts is used to illustrate the accumulations of manufacturing variations, and the T-Maps ® provide stackup relations that can be used to allocate size and orientational tolerances. This model is one part...

...Jianpeng Yue; Jaime A. Camelio; Melida Chin; Wayne Cai Dimensional variation in assembled products directly affects product performance. To reduce dimensional variation, it is necessary that an assembly be robust. A robust assembly is less sensitive to input variation from the product and process...

...Hans-Peter Schröcker; Manfred L. Husty; J. Michael McCarthy This paper presents a new method to determine if two task positions used to design a four-bar linkage lie on separate assembly modes (circuits) of a coupler curve, known as an “assembly mode defect.” The proposed approach uses the image...

...Jian S. Dai; Xilun Ding The platform based vibratory bowl feeders are essential elements in automatic assembly. Taking the bowl feeder as a typical three-legged rigidly connected compliant platform device, this paper applies von Mises’ compliance matrix to each of the leaf-spring legs, establishes...

...Naesung Lyu; Byungwoo Lee; Kazuhiro Saitou A method for optimally synthesizing multicomponent structural assemblies of an aluminum space frame (ASF) vehicle body is presented, which simultaneously considers structural stiffness, manufacturing and assembly costs and dimensional integrity under...

...Stephen Wiedmann; Bob Sturges Compliant mechanisms for rigid part mating exist for prismatic geometries. A few instances are known of mechanisms to assemble screw threads. A comprehensive solution to this essentially geometric problem comprises at least three parts: parametric equations for nut...

...Stephen Wiedmann; Bob Sturges This work addresses the geometry of threaded fastener insertion at a detailed level in order to determine the nature of contact between a bolt and nut during the initial phases of thread mating. The assembly problem was modeled as a constrained three-dimensional...