All manufacturing processes are afflicted by geometrical variation, which can lead to defect products. A simulation tool for geometry assurance analysis is therefore important in the design process. The use of composites has recently increased drastically, but there still a lack understanding about effects variation such parts. method predicting subassemblies, including fiber orientation and ply thickness presented. approach demonstrated on an industrial case finite element used calculate...

Every series of manufactured products has geometric variation. Variation can lead to that are difficult assemble or not fulfilling functional aesthetic requirements. In this paper, we will consider the effects welding in variation simulation. Earlier work been combining simulation with either applied distortion based on nominal conditions onto result, hence loosing combination effects, used transient thermo-elasto-plastic simulation, which be very time consuming since number runs required...

Geometrical variation and deviation in all the manufacturing processes affect quality of final product. Therefore, geometry assurance is an important tool design phase a new In automotive aviation industries where use composite parts increasing drastically, tools within simulations are needed. Composite tend to deviate more from nominal specification compared metal parts. Methods simulate process composites have been developed before. this paper, we present how combine simulation with...

Abstract Geometrical variation is one of the sources quality issues in a product. Spot welding an operation that impacts final geometrical sheet metal assembly considerably. Evaluating outcome assembly, considering existing between components, can be achieved using method influence coefficients (MICs), based on finite element (FEM). The sequence with which spot performed influences deformations assembly. Finding optimal results minimum deformation combinatorial problem experimentally and...

Geometrical variation and deviation in all manufacturing processes affect quality of the final product. Therefore geometry assurance is an important tool design phase a new In automotive aviation industries where use composite parts increasing drastically, tools within simulations are needed. Composite tend to deviate more from nominal specification compared metal parts. Methods simulate process composites have been developed before. this paper we present how combine simulation with...

Welding induces high temperatures that cause residual stresses and strains in the welded structure. With a welding simulation, these may be predicted. A full simulation implies performing transient thermal quasi-static mechanical analysis. These analyses usually involve large number of time steps leads to long times. For distortions, there are approximate methods require considerably less time. This is useful when simulating structures or for use an iterative approach common optimization...

The prediction of geometric variation and its consequences is one important aspect product development. For welded assemblies it has been shown that positioning errors the parts prior to welding affects weld-induced distortion. Therefore, accurately predict in assemblies, simulation need be performed combination. This usually a very time consuming task, therefore, relatively fast SCV-method utilized. method used calculate distortion when are present consists following three steps: 1) steady...

Abstract Selective laser melting (SLM) process is a powder bed fusion additive manufacturing that finds applications in aerospace and medical industries for its ability to produce complex geometry parts. As the raw material used form, particle size distribution (PSD) significant characteristic influences build quality turn affecting functionality esthetic aspects of product. This article investigates effect PSD on printed 316L stainless steel pow der, where three coupled in-house simulation...

In the design of complex products, some product components can only be chosen from a finite set options. Each option then corresponds to multidimensional point representing specifications components. A splitting algorithm that explores resulting discrete search space and is suitable for optimization problems with simulation-based objective functions presented. The rule based on representation convex relaxation in terms minimum spanning tree adopts ideas multilevel coordinate search. function...

Every series of manufactured products has geometric variation. Variation can lead to that are difficult assemble or not fulfilling functional aesthetical requirements. In this paper, we will consider the effects welding in variation simulation. Earlier work have been combining simulation with either applied distortion based on nominal conditions onto result, hence loosing combination effects, used transient thermo-elasto-plastic simulation, which be very time consuming since number runs...

In any industrial assembly process, there are a number of sources variation. Variation in the manufacturing process leads to component variation, which, together with fixture variation and stemming from joining propagates final product. order analyze diminish effect it is important identify be able simulate phenomena contributing this paper, focus welding distortion arising non-nominal components that joined. has been shown fixtures influences size distribution weld-induced distortion....

Abstract Metal additive manufacturing has significantly impacted the industry, yet ensuring geometric quality remains a challenge during design phase, with distortion proving difficult to alleviate through post-treatment methods. In numerous processes, simulations have proven effective; however, accurately simulating outcomes in metal necessitates mathematical representation of various physical scales, spanning from microscopic intricacies powder and laser melting macroscopic deformation...

Abstract Geometric variation is one of the sources quality issues in a product. Spot welding an operation that impacts final geometric sheet metal assembly considerably. Evaluating outcome assembly, considering existing geometrical between components can be achieved using Method Influence Coefficients (MIC), based on Finite Element (FEM). The sequence, with which spot performed, influences deformations assembly. Finding optimal sequence results minimum deformation combinatorial problem...

Abstract Selective laser melting process is a powder bed fusion additive manufacturing that finds applications in aerospace and medical industries for its ability to produce complex geometry parts. As the raw material used form, particle size distribution (PSD) significant characteristic influences build quality turn affecting functionality aesthetics aspects of end product. This paper investigates effect PSD on deformation 316L stainless steel powder, where three coupled in-house simulation...