Simulation and Topological Optimization of the Lifting Mechanism of a Dump Truck

2013 ◽  
Vol 470 ◽  
pp. 271-274
Author(s):  
Li Dong Yuan ◽  
Xian Kun Lin
Keyword(s):  
Topology Optimization ◽  
Product Quality ◽  
Key Words ◽  
Hydraulic Cylinder ◽  
Topological Optimization ◽  
Dump Truck ◽  
Improve Product Quality ◽  
Development Cycle ◽  
Multi Body ◽  
Movement Simulation

Taking a heavy dump truck as the research object, multi-body analysis and movement simulation are carried out on the lifting mechanism to determine the largest lifting time of the hydraulic cylinder. The stress value of key components and corresponding lifting Angle are acquired, and the calculated results and the actually known parameters and data are compared to verify the rationality of the design of lifting mechanism. Using ABAQUS for the strength check of the triangular arm and using OptiStruct for the topology optimization of the part, the mass and the volume of the new part are reduced more than 1 time. The development of part can improve product quality, shorten development cycle and reduce costs. Key words: Lifting Mechanism, Simulation, Strength Check, Topology Optimization

A Wing Structure Design Based on Topology Optimization

2014 ◽  
Vol 889-890 ◽  
pp. 272-276
Author(s):  
Gang Tong ◽  
Tong Fei Liu ◽  
Yang Chen Deng
Keyword(s):  
Finite Element ◽  
Topology Optimization ◽  
Key Words ◽  
Structure Design ◽  
Topological Optimization ◽  
Structure Topology ◽  
Wing Structure

Introduces the characteristics of topology optimization and bionics, proposes the steps and method of using MSC.Patran to establish the model of the wing structure topology optimization, and through to illustrate the feasibility of the method and the application value of the wing structure topology optimization and bionics design. Key words: topological optimization; wing structure; bionics design ;finite element; MSC Patran;MSC Nastran

Numerical Experiments in Using Voronoi Cell Finite Elements for Topology Optimization

2009 ◽  
Author(s):  
James M. Gibert ◽  
Georges M. Fadel
Keyword(s):  
Topology Optimization ◽  
Isotropic Material ◽  
Numerical Experiments ◽  
Voronoi Cell ◽  
Material Model ◽  
Topological Optimization ◽  
Advantages And Disadvantages ◽  
Compliance Minimization ◽  
Design Variables ◽  
Standard Linear

This paper provides two separate methodologies for implementing the Voronoi Cell Finite Element Method (VCFEM) in topological optimization. Both exploit two characteristics of VCFEM. The first approach utilizes the property that a hole or inclusion can be placed in the element: the design variables for the topology optimization are sizes of the hole. In the second approach, we note that VCFEM may mesh the design domain as n sided polygons. We restrict our attention to hexagonal meshes of the domain while applying Solid Isotropic Material Penalization (SIMP) material model. Researchers have shown that hexagonal meshes are not subject to the checker boarding problem commonly associated with standard linear quad and triangle elements. We present several examples to illustrate the efficacy of the methods in compliance minimization as well as discuss the advantages and disadvantages of each method.

Innovative Design, Structural Optimization and Additive Manufacturing of New-Generation Turbine Blades

2021 ◽  
pp. 1-31
Author(s):  
Lorenzo Pinelli ◽  
Andrea Amedei ◽  
Enrico Meli ◽  
Federico Vanti ◽  
Benedetta Romani ◽  
...  
Keyword(s):  
Topology Optimization ◽  
Additive Manufacturing ◽  
Structural Optimization ◽  
Turbine Blade ◽  
Turbine Blades ◽  
Topological Optimization ◽  
Mode Shapes ◽  
Structural Topology Optimization ◽  
Structural Topology ◽  
New Generation

Abstract The need for high performances is pushing the complexity of mechanical design at very high levels, especially for turbomachinery components. Structural topology optimization methods together with additive manufacturing techniques for high resistant alloys are considered very promising tools, but their potentialities have not been deeply investigated yet for critical rotating components like new-generation turbine blades. This research work proposes a methodology for the design, the optimization and the additive manufacturing of extremely stressed turbomachinery components like turbine blade-rows. The presented procedure pays particular attention to important aspects of the problems as fluid-structure interactions and fatigue of materials, going beyond the standard structural optimization approaches found in the literature. The numerical procedure shows robustness and efficiency, making the proposed methodology a good tool for rapid design and prototyping, and for reducing the design costs and the time-to-market typical of these mechanical elements. The procedure has been applied to a low-pressure turbine rotor to improve the aeromechanical behavior while keeping the aerodynamic performance. From the original geometry, mode-shapes, forcing functions and aerodynamic damping have been numerically evaluated and are used as input data for the following topological optimization. Finally, the optimized geometry has been verified in order to confirm the improved aeromechanical design. After the structural topology optimization, the final geometries provided by the procedure have been then properly rendered to make them suitable for additive manufacturing. Some prototypes of the new optimized turbine blade have been manufactured to be tested in terms of fatigue.

Study Situation and Development Prospects of Far Infrared Thermal Underwear

2012 ◽  
Vol 627 ◽  
pp. 613-615
Author(s):  
Zheng Liu ◽  
Shuai Liu ◽  
Xiu E Bai
Keyword(s):  
Product Quality ◽  
Theoretical Basis ◽  
Far Infrared ◽  
Status Quo ◽  
Improve Product Quality ◽  
Improve Product ◽  
Development Prospects

This article described the study status quo and market characteristics of the far infrared thermal underwear, come up with some development proposals for the far infrared thermal underwear, to provide a theoretical basis for further improve product quality.

Mold Flow-Based Mold Flow Analysis of Copier Parts and its Solution Optimization

2012 ◽  
Vol 538-541 ◽  
pp. 1072-1075
Author(s):  
Jun Kai Yang ◽  
Yun Jie Xu
Keyword(s):  
Product Quality ◽  
Design Process ◽  
Flow Analysis ◽  
Production Costs ◽  
Improve Product Quality ◽  
Cooling Process ◽  
Mold Flow Analysis ◽  
Product Design Process ◽  
Plastic Parts ◽  
Mold Flow

Mold flow software is used to conduct mold flow analysis of copier parts, simulate its filling and cooling process, and predict possible defects in the product design process in order to determine the formability of plastic parts and product quality. The optimal mold structure can be obtained by comparing different solutions so as to save production costs and improve product quality and efficiency.

scholarly journals Performance of Disk Mill Type Mechanical Grinder for Size Reducing Process of Robusta Roasted Beans

2006 ◽  
Vol 23 (3) ◽  
Author(s):  
Sri Mulato ◽  
Sukrisno Widyotomo ◽  
Hadi Karia Purwadaria2
Keyword(s):  
Moisture Content ◽  
Product Quality ◽  
Key Words ◽  
Milling Process ◽  
Processing Method ◽  
Technical Parameters ◽  
Powder Product ◽  
Disk Mill ◽  
Coffee Powder ◽  
Grinding Machine

One of improtant steps in secondary coffee processing that influence on final product quality such as consistency and uniformity is milling process. Usually, Indonesian smallholder used "lumpang" for milling coffee roasted beans to coffee powder product which caused the final product not uniformed and consistent, and low productivity. Milling process of coffee roasted beans can be done by disk mill type mechanical grinder which is used by smallholder for milling several cereals. Indonesian Coffee and Cocoa Research Institute have developed disk mill type grinding machine for milling coffee roasted beans. Objective of this research is to find performance of disk mill type grinding machine for size reducing process of Robusta roasted beans from several size dried beans and roasting level treatments. Robusta dried beans which are taken from dry processing method have 13—14% moisture content (wet basis), 680—685 kg/m3 density, and classified in 3 sizes level. The result showed that the disk mill type of grinding machine could be used for milling Robusta roasted beans. Machine hascapacity 31—54 kg/h on 5,310—5,610 rpm axle rotation and depend on roasting level. Other technical parameters were 91—98% process efficientcy, 19—31 ml/ kg fuel consumption, 0.3—1% slips, 50—55% particles had diameter less than 230 mesh and 38—44% particles had diameter bigger than 100 mesh, 32—38% lightness was increased, 0.6—12.6% density was decreased, and solubility of coffee powder between 28—30%. Cost milling process per kilogram of Robusta roasted beans which light roast on capacity 30 kg/hour was Rp362.9. Key words : Coffee roasted, Robusta, disk mill, mechanical grinder, size reduction.

scholarly journals Pengaruh Produk dan Harga terhadap Keputusan Pembelian Tepung Bumbu Mamasuka

2018 ◽  
Vol 2 (1) ◽  
pp. 106-117
Author(s):  
Dodi Agusra
Keyword(s):  
Consumer Behavior ◽  
Product Quality ◽  
Linear Analysis ◽  
Improve Product Quality ◽  
Purchasing Decisions ◽  
Purchasing Decision ◽  
Improve Product ◽  
Competitive Price

Companies must be responsive in addressing consumer behavior by anticipating changes and retaining consumers so that consumers are loyal. The aim of this research was to determine the effect of products and prices on consumer’s purchasing decisions Mamasuka spacy flour at PT Jico Agung in Pekanbaru. There were 60 consumers used as population and sample in this research. They are the consumers from shops and grocers selling Mamasuka spicy flour of PT Jico Agung in Pekanbaru. While the method used in this research was multiple linear analysis. The result showed that both products and prices affected each other in consumers’ decision to buy Mamasuka spicy flour. Product and prices also affected positively consumers’ purchasing decision in buying Mamasuka spicy flour at PT Jico Agung in Pekanbaru. The contribution of product and prices to consumers’ purchasing decisions in buying Mamasuka was 41,6%, while the rest is equal to 58,4% influenced by other variables not examined in this research. PT Jico Agung was expected to improve product quality and provide competitive price as well as concern about promotion strategi used.Keywords: Products, Prices, Purchasing Decisions

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