Study on the Optimal Design of the Members of Contaniner Building with Building Materials I: Side Board Optimization

2013 ◽  
Vol 859 ◽  
pp. 270-273 ◽  
Author(s):  
Xiao Xiong Zha ◽  
Yang Zuo ◽  
Shi Yun Chen
Keyword(s):  
Software Package ◽  
Design Theory ◽  
Optimization Design ◽  
Building Materials ◽  
Steel Structure ◽  
Building Construction ◽  
Cross Sectional ◽  
Design Variables ◽  
Cross Sectional Dimension ◽  
Cross Sectional Size

Container, as a light steel structure, being increasingly used in building construction, containers used in construction has many advantages and applications. However, the current study mostly from the view of the architecture, as for the mechanical properties of the container building has not mentioned, that brings obstacles of the application and development of the container building. Based on the software package of HyperWorks and optimization design theory, the cross-sectional size of container building is taken as design variables, and then selected objective function and constraint functions. Finally, calculated by software, get the optimal cross-sectional dimension.

Study on the Optimal Design of the Members of Contaniner Building with Building Materials II: Joint and Corner Column Optimization

2013 ◽  
Vol 859 ◽  
pp. 266-269 ◽  
Author(s):  
Xiao Xiong Zha ◽  
Yang Zuo ◽  
Shi Yun Chen
Keyword(s):  
Optimal Design ◽  
Software Package ◽  
Optimization Design ◽  
Building Materials ◽  
Element Analysis ◽  
Cross Sectional ◽  
Design Variables ◽  
The Finite Element Analysis ◽  
Cross Sectional Size ◽  
Strength And Stiffness

Containers are widely used for building, in order to promote the use of container building, it is necessary to do the research on optimal design. The corresponding optimal design has been achieved through the software package of HyperWorks, the lightest total weight is taken as the objective function, and the strength and stiffness are taken as the constraint conditions. Based on the finite element analysis of the joint and corner column, the cross-sectional size is taken as design variables, and then the optimization design of joint and corner column of container building is made.

Meningkatkan Daya Dukung Tiang Pondasi Minipile Persegi Pada Gedung Kantor Ngasem Kabupaten Kediri Menggunakan Metode Mayerhoff

2021 ◽  
Vol 4 (2) ◽  
pp. 41
Author(s):  
Erwin Dwi Laksana ◽  
Edy Gardjito ◽  
Suwarno Suwarno ◽  
Faiz Muhammad Azhari ◽  
Imam Mustofa
Keyword(s):  
Bearing Capacity ◽  
Soil Type ◽  
Building Construction ◽  
Office Building ◽  
Cross Sectional ◽  
Cross Sectional Dimension ◽  
Pile Cap ◽  
Calculation Results ◽  
Foundation Pile ◽  
Hard Soil

The foundation is one part under the building that has a very important role. The choice of the type of foundation is something that needs to be considered. One type of foundation that is widely used is the minipile foundation. Minipile foundation itself is a type of foundation that is used if the load received from the superstructure is not too heavy and the hard soil type is at a depth of between 5-10m. The purpose of this study was to plan the bearing capacity of the minipile foundation pile in the PT. BPJE in Ngasem, Kediri Regency. The building is planned to be used as an office building. The planned sub-building includes foundation planning with a mini-square building with a cross-sectional dimension of 20x20. The calculations carried out include the calculation of the bearing capacity of the foundation using the Mayerhoff method, the calculation of the flexural factor and the calculation of reinforcement. The calculation results (sigma Vertical Ultimate) Vu = 114.78 tons. With bending factor tk = 286.95 kg /. The reinforcement in the pile cap for the x direction of tensile reinforcement = D16–170 and compression reinforcement = D16–250 while for tensile reinforcement in the y direction = D16 - 170 and compressive reinforcement = D10 - 250. Thus, the results of the planning can be used as a reference for the implementation of building construction. office of PT. BPJE in Ngasem, Kediri Regency.

Topology Optimization Design of Pre-Stressed Plane Entity Steel Structure with the Constrains of Stress and Displacement

2014 ◽  
Vol 945-949 ◽  
pp. 1216-1222 ◽  
Author(s):  
Li Yao ◽  
Yun Xia Gao ◽  
Hai Jun Yang
Keyword(s):  
Topology Optimization ◽  
Optimization Design ◽  
Mechanical Performance ◽  
Steel Structure ◽  
Structural Topology ◽  
Unit Size ◽  
Structure Topology ◽  
Design Variables ◽  
Displacement Sensitivity ◽  
Low Sensitivity

For the prestressed plane entitiy steel structure topology optimization design which design variables include the cable pretension value, unit size and the structural topology, the optimized mathematical model which objective function is the minimum structural weight is established with consideration of the constrains of stress and displacement. As for the solving method, firstly we need to determine the pretension applying to the cable according to full stress design and choose the unit size; then we need to conduct displacement sensitivity analysis to delete the low sensitivity unit to realize the structural topology optimization design. The example result is in conformity with the corresponding system of mechanical performance, and it indicates that the method proposed in this paper is effective.

Shape Optimization of Isotropic Composite Beams Undergoing Harmonic Flexural and Torsional Loading

1999 ◽  
Author(s):  
Arnold Lumsdaine ◽  
Arnoldo Garcia ◽  
Ying Yao
Keyword(s):  
Cross Sections ◽  
Steel Structure ◽  
Acrylonitrile Butadiene Styrene ◽  
Composite Beams ◽  
Harmonic Excitation ◽  
Intermediate Mass ◽  
Cross Sectional ◽  
Isotropic Composite ◽  
Design Variables ◽  
Inertial Component

Abstract The purpose of this study is to optimize beams undergoing harmonic excitation in both bending and torsion due to an intermediate mass and inertial component. The objective is to minimize the weight for a composite beam made of glass reinforced acrylonitrile butadiene styrene (ABS), while maintaining performance above a given natural frequency. Design variables are the cross-sectional dimensions. Weight reduction is computed compared to a uniform case. The results are obtained for two different composites with different glass densities, and compared with results obtained with a steel structure. The structure examined is a clamped-clamped beam with an intermediate mass and inertial component. Basic structures are modeled and optimized analytically. Coupling effects are modeled discretely using finite elements, and these structures are optimized using commercial software. Structures with closed (circular) and open (channel) cross-sections are examined. Results show order of magnitude improvement of optimized structures for both steel and composite beams.

scholarly journals Vibration characteristic analysis of single-cylinder two-stroke engine and mounting system optimization design

2020 ◽  
Vol 103 (3) ◽  
pp. 003685042093063
Author(s):  
Jinhui Liang ◽  
Dongdong Zhang ◽  
Shuwen Wang
Keyword(s):  
Dynamic Model ◽  
Design Theory ◽  
Optimization Design ◽  
Excitation Frequency ◽  
System Optimization ◽  
Characteristic Analysis ◽  
High Rotational Speed ◽  
Single Cylinder ◽  
Design Variables ◽  
Stroke Engine

Compared with four-stroke engines, single-cylinder two-stroke engines have the characteristics of small inertia, high rotational speed, and wide excitation frequency range. However, the structural vibration and noise generated by the two-stroke engine are very violent. Hence, it is necessary to reduce the vibration and noise of the single-cylinder two-stroke engine. Based on the design theory of the engine mounting system, the excitation frequency, direction, and magnitude of a single-cylinder two-stroke engine are analyzed. The rubber isolator is selected as the new mount element, and the dynamic model of the engine powertrain mounting system is established based on ADAMS software. Based on the sensitivity analysis of the design variables of the mounting system, the natural frequency of the mounting system is used as an objective, and the three-directional stiffness of the mounting system is taken as design variables for the optimization problem. The optimization model is solved by the sequential quadratic programming method. The results show that the maximum frequency of the mounting system after optimization is less than 1/[Formula: see text] of the excitation frequency, and the isolation effect is achieved. The dynamic model and the optimization method presented in this article would provide a useful tool for the design and optimization of mounting system for the single-cylinder two-stroke engine to reduce vibration from the engine to the engine support.

Application of Optimal Technique with Discrete Variables in Furnace Structure

2011 ◽  
Vol 308-310 ◽  
pp. 1187-1192
Author(s):  
Xiao Ming Yuan ◽  
Li Jie Zhang ◽  
Bing Du ◽  
Qiu Zhong Wang ◽  
Da Xing Zeng
Keyword(s):  
Total Mass ◽  
Optimization Design ◽  
Steel Structure ◽  
Element Model ◽  
Size Optimization ◽  
Discrete Variables ◽  
Discrete Variable ◽  
Design Variables ◽  
Ansys Apdl ◽  
Automatic Loading

Based on the characteristics of steel structure of the furnace, a generic finite element model, automatic loading, analysis and post-processing was achieved by ANSYS-APDL firstly. Then taking the sizes of profile as design variables and total mass as objective function, the size optimization design on steel structure was developed by means of two-level algorithm based on discrete variable.

Intelligence Optimization Design Model of Deep Cement-Stirring Pile

2010 ◽  
Vol 44-47 ◽  
pp. 1505-1508
Author(s):  
Xiang Yang Chen ◽  
Heng Zhen Yan
Keyword(s):  
Genetic Algorithm ◽  
Particle Swarm Optimization ◽  
Design Theory ◽  
Optimization Design ◽  
Particle Swarm ◽  
Composite Foundation ◽  
Swarm Optimization ◽  
Pile Diameter ◽  
Design Variables ◽  
Pile Length

Aiming at the phenomenon of the more conservative design of deep cement stirring pile currently, used optimization design theory such as genetic algorithm and particle swarm optimization, taken the cement consumption as the object function, taken replacement rate, water-cement ratio, pile diameter and pile length as the design variables, composite foundation bearing capacity and settlement as restrictive conditions, the optimal design models are established respectively based on genetic algorithm and particle swarm optimization. Case studies have shown that these two established models are effective. By comparison, the particle swarm optimization model is the more effective one.

Sensitivity data driven optimal design for steel frame tall buildings

2021 ◽  
Author(s):  
Chenyun Zhang ◽  
Yong Huang ◽  
Xin Zhao ◽  
Jinlun Cai
Keyword(s):  
Optimization Design ◽  
High Efficiency ◽  
Design Method ◽  
Tall Buildings ◽  
Steel Structure ◽  
Optimization Method ◽  
Sensitivity Coefficient ◽  
Optimization Techniques ◽  
Sensitivity Coefficients ◽  
Design Variables

<p>Structural design generally involves hundreds of design variables and multiple constraints in practical engineering projects, nevertheless, traditional optimization techniques are failed to meet the engineering requirements for solving the optimization problem with high efficiency and accuracy. In this paper, a single driven constraint optimization method based on constraint sensitivity is presented for high-rise steel structure. The design method takes the sensitivity coefficient as the reference index for the optimization design of components to ensure proper compliance and redundancy requirements. An effective incremental analysis method is applied for the calculation of sensitivity coefficients within constraints and design variables. Sensitivity coefficients based material redistribution of components is carried out to make the structure achieve the optimization objective on the premise of satisfying all the design constraints.</p>

Multi-Objective Optimization of Piezoelectric Microactuator Using Genetic Algorithms

2008 ◽  
Author(s):  
H. Esteki ◽  
A. Hasannia
Keyword(s):  
Genetic Algorithms ◽  
Strain Energy ◽  
Compliant Mechanism ◽  
Objective Functions ◽  
Multi Objective Optimization ◽  
Cross Sectional ◽  
Flexure Hinges ◽  
Design Variables ◽  
Cross Sectional Size ◽  
Real Coded Genetic Algorithms

In flex-tensional piezoactuators, due to the low displacement of piezostacks, a compliant mechanism is used to amplify displacement of piezostack. In this paper, optimization of a compliant mechanism with corner-filleted flexure hinges is carried out using real-coded genetic algorithms (GAs) to avoid trapping in local optimums. The objective functions are displacement amplification and stiffness of mechanism and design variables are cross-sectional size and material used. The constraints which are applied on mechanism are based on piezostack dimensions and manufacturing limits. Displacement amplification and stiffness are calculated using strain energy and Castigliano’s displacement theorem.

Optimization Design Method for Body Frame of Vehicular Glass Edge Grinding Machine Based on Goal-Driven Optimization

2013 ◽  
Vol 345 ◽  
pp. 561-565 ◽  
Author(s):  
Jian Hu ◽  
Zhan Jin Wang ◽  
Bin Duan ◽  
Gang Yan Li
Keyword(s):  
Cantilever Beam ◽  
Optimization Design ◽  
The Body ◽  
Grinding Wheel ◽  
Body Frame ◽  
Wheel Load ◽  
Cross Sectional ◽  
Maximum Deformation ◽  
Cross Sectional Size ◽  
Maximum Body

In the application of the Vehicular Glass Grinding Edge Machine (VGGEM), in order to enhance the body frame rigidity, it is necessary to reduce the maximum body frame deformation by optimizing the body frame cantilever beam cross-sectional size. Considering to this point, a CAD model of the VGGEM is built by using Pro/E, then, further be divided into a simplified grid model by using ANSYS WorkBench. Based on goal-driven optimization method, the grinding wheel load is worked out by using the maximum body frame deformation, and the optimum body frame cantilever beam cross-sectional size is figured out by using the stress distribution of the grinding wheel and the maximum deformation constraints. After the performance analysis of the optimized designed body frame of VGGEM, its rigidity and strength are proved.

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