Optimization design and manufacturing tolerance analysis of a polymer microring resonant wavelength multiplexer

2005 ◽  
Vol 44 (2) ◽  
pp. 025005 ◽  
Author(s):  
Xian-Yin Wang
Keyword(s):  
Optimization Design ◽  
Tolerance Analysis ◽  
Resonant Wavelength ◽  
Manufacturing Tolerance ◽  
Design And Manufacturing

Tolerance Analysis for Validating Manufacturing Process Plans

2014 ◽  
Author(s):  
Wentao Fu ◽  
Saigopal Nelaturi ◽  
Arvind Rangarajan ◽  
Tolga Kurtoglu
Keyword(s):  
Process Planning ◽  
Manufacturing Process ◽  
Degrees Of Freedom ◽  
Tolerance Analysis ◽  
Manufacturing Tolerance ◽  
Process Plans ◽  
Novel Approach ◽  
Manufacturing Process Planning ◽  
Design And Manufacturing ◽  
Engineering Constraints

In manufacturing process planning, it is critical to ensure that the part generated from a process plan complies with tolerances specified by designers to meet engineering constraints. Manufacturing errors are stochastic in nature and are introduced at almost every stage of executing a plan, for example due to inaccuracy of tooling, misalignment of location, distortion of clamping etc. Furthermore, these errors accumulate or ‘stack-up’ as the manufacturing process progresses to inevitably produce a part that varies from the designed model. The resultant variation should be within prescribed design tolerances. In this work, we present a novel approach for validating process plans using 3D tolerance stack-up analysis by representing variations of nominal features in terms of extents of their degrees of freedom within design and manufacturing tolerance zones. We will show how the manufacturing error stack-up can be effectively represented by composition and intersection of these transformations. We demonstrate several examples with different tolerance specifications to show the applicability of our approach for process planning.

Optimal Design of Bogie Parameters Determination Test Bench Gantry Framework Based on SolidWorks/Simulation

2011 ◽  
Vol 199-200 ◽  
pp. 1253-1256
Author(s):  
Dong Lin Zhang ◽  
Jian Su ◽  
Xiao Ning Cao ◽  
Hai Bin Gong
Keyword(s):  
Optimization Design ◽  
Test Bench ◽  
Mathematic Model ◽  
Simulation Software ◽  
Main Beam ◽  
Manufacturing Cost ◽  
Test Bed ◽  
Analysis And Design ◽  
Design And Manufacturing

On the basis of SolidWorks/Simulation FEA module, statics analysis and design optimization for bogie parameters determination test bench gantry framework are researched in this paper. Taking the optimization design of gantry framework main beam for example, an optimal mathematic model is established, the optimization goal is to reduce the quality of the main beam, and the constraints are displacement and stress. Simultaneously, the model is simulated by the SolidWorks/Simulation software. Compared with the initial design, the results show that the quality of main beam is reduced by 12.69%, the quality optimization goal of the gantry framework test bed is realized. Meanwhile, it not only reduced the design and manufacturing cost, but also enhanced the design efficiency.

Manufacturing Tolerance Analysis of a Robot Manipulator’s Joint Axis Orientation Employing Single Monte-Carlo Simulation

2006 ◽  
Author(s):  
Dong Hwan Choi ◽  
Hong Hee Yoo
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Robot Manipulator ◽  
Computing Time ◽  
Tolerance Analysis ◽  
Manufacturing Cost ◽  
Axis Orientation ◽  
Manufacturing Tolerance ◽  
Design Engineers ◽  
Joint Axis

The operation error of a robot manipulator that occurs inevitably due to the manufacturing tolerance needs to be controlled within a certain range to achieve proper performance. The reduction of manufacturing tolerance, however, increases the manufacturing cost in return. Therefore, system design engineers try to solve the problem of maximizing the tolerance to reduce the manufacturing cost while minimizing the operation error to satisfy the performance requirement. In the present study, a revolute joint model considering the variation of joint axis orientation due to joint clearance is employed to perform a tolerance analysis of the robot manipulator operation. This paper presents a hybrid method which employs the sensitivity-based analytic method and the single Monte-Carlo simulation. The proposed method provides rapid implementation and the accurate statistical properties using the only single integration or single iteration for one sample set, whereas the Monte-Carlo method necessitates integrations as the number of samples and cases. Significant reduction of computing time can be achieved with the proposed method. The present method is especially effective if sensitivity information is hard to be obtained for the analysis.

Comparative Analysis of Chosen Tolerance Stackup Methods and Development of an Improved Tolerance Analysis Method

2015 ◽  
Vol 813-814 ◽  
pp. 954-958
Author(s):  
R. Panneer ◽  
A.M. Jackson
Keyword(s):  
Comparative Analysis ◽  
Tolerance Analysis ◽  
Assembly Tolerance ◽  
Simulation Based ◽  
Design And Manufacturing ◽  
Artificial Neural Network Ann ◽  
And Function ◽  
The Cost ◽  
2D And 3D ◽  
Insight Into

The perception of Tolerance Analysis (TA)/Tolerance Stackup is imperative for every Design and Manufacturing Engineer because Tolerance is the criterion that should be compromised between the cost and function of a product. The literatures relevant to 15 methods of TA which are being used to determine Assembly Tolerance from Component Tolerances are collected and critically analyzed to gain an insight into the existing methods. Out of these methods, four major methods viz., Simulation Based Stack-Up Analysis, Second Order Tolerance Analysis, OpTol - Spatial Tolerance Analysis and Tolerance Analysis of 2D and 3D Assemblies are chosen for further study and comparative analysis. Based on the analysis and based on the identified merits and demerits of these methods, a framework for a new TA Method is developed. Based on the developed framework, a new TA Method using Artificial Neural Network (ANN) is developed and trained which can predict the value of Assembly Tolerance for the known Component Tolerances.

Optimal Design of Electronic Circuit

2011 ◽  
Vol 58-60 ◽  
pp. 2581-2584
Author(s):  
Jing Li Wang
Keyword(s):  
Optimal Design ◽  
Optimization Design ◽  
Analog Circuit ◽  
Electronic Circuit ◽  
Teaching Practice ◽  
Tolerance Analysis ◽  
Optimization Method ◽  
Practical Significance ◽  
Automatic Design ◽  
Circuit Optimization

Circuit optimization method should include the topology of automatic design circuit and automatically determine components parameters of the circuit. At present, CAD or EDA optimization tools is produced by combined optimization algorithm and the basic analysis above together with the tolerance analysis. In this paper, optimization design which can modular basic analog circuit by using Optimizer, which makes the circuit topology structure and component parameters tend to be more reasonable, provides the basis for teaching practice and scientific research. It has practical significance.

Tolerance Analysis of Mechanical Assemblies Based on Fuzzy - Small Degrees of Freedom (F-SDOF) Model

2010 ◽  
Author(s):  
S. Khodaygan ◽  
M. R. Movahhedy
Keyword(s):  
Degrees Of Freedom ◽  
Fuzzy Theory ◽  
Tolerance Analysis ◽  
Geometric Features ◽  
Uncertain Environment ◽  
Dimensioning And Tolerancing ◽  
Mechanical Assemblies ◽  
Design And Manufacturing

Tolerances naturally generate an uncertain environment for design and manufacturing. In this paper, a novel fuzzy based tolerance representation approach for modeling the variations of geometric features due to dimensional tolerances is presented. The two concepts of fuzzy theory and small degrees of freedom are combined to introduce the fuzzy-small degrees of freedom model (F-SDOF). This model is suitable for tolerance analysis of mechanical assemblies with linear and angular tolerances. The presented method is compatible with the current dimensioning and tolerancing standards. The application of the proposed methodology is illustrated through presenting an example problem.

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