Stress Analysis of the Biomass Molding Mould Based on ANSYS

2013 ◽  
Vol 716 ◽  
pp. 713-716
Author(s):  
Jian Feng Meng ◽  
Bai Tao Feng ◽  
Yu Ping Dong
Keyword(s):  
Renewable Energy ◽  
Stress Field ◽  
Stress Analysis ◽  
Frictional Force ◽  
Equivalent Stress ◽  
Force Distribution ◽  
Structure Parameter ◽  
Key Technologies ◽  
Maximum Equivalent Stress ◽  
The Relationship

Biomass is a renewable energy. Its curing and molding technology is one of the key technologies and mould structure parameter is a important factor. A model is set based on ANSYS to simulate the molding, then the equivalent stress field and frictional force distribution of mould are founded. Finally, the relationship between maximum equivalent stress and mould parameter is studied.

Mould Structure Optimization of the Biomass Molding Machine

2013 ◽  
Vol 330 ◽  
pp. 826-829
Author(s):  
Jian Feng Meng ◽  
Bai Tao Feng ◽  
Yu Ping Dong
Keyword(s):  
Renewable Energy ◽  
Curve Fitting ◽  
Optimization Model ◽  
Equivalent Stress ◽  
Structure Optimization ◽  
Molding Machine ◽  
Key Technologies ◽  
Maximum Equivalent Stress ◽  
The Relationship

Biomass is a renewable energy. Its curing and molding technology is one of the key technologies and mould structure is a important factor. A model is set based on ANSYS to simulate the molding, and using curve fitting, the relationship between maximum equivalent stress and mould parameter is founded. Then the optimization model is set and mould parameter is optimized.

scholarly journals The relationship between stress of plate-fin structures and emergency stop operation process in LNG heat exchanger

2021 ◽  
Vol 76 ◽  
pp. 77
Author(s):  
Hongqiang Ma ◽  
Shengxun Wang ◽  
Yue Xie ◽  
Xinmei Luo ◽  
Jianping Han
Keyword(s):  
Heat Exchanger ◽  
Temperature Difference ◽  
Equivalent Stress ◽  
Equilibrium Temperature ◽  
Equilibrium Pressure ◽  
Operation Process ◽  
Maximum Equivalent Stress ◽  
Emergency Stop ◽  
Last Stage ◽  
The Relationship

For insuring the safe operation of LNG heat exchanger in the Emergency Stop Operation Process (ESOP), a numerical method is proposed to investigate the stress of Plate-Fin Structures (PFS) in that. The relationship between stress of PFS and ESOP is analyzed in LNG heat exchanger. The results will be obtained that the maximum equivalent stress of PFS is greater at the initial stage of ESOP than that at the last stage when the HMR pressure is more than 5 MPa. The maximum equivalent stress increases with the equilibrium temperature when is greater than 180 K and reaches peak value at the last stage of ESOP. The maximum equivalent stress is larger at the last stage of ESOP than the other stage and increases with the equilibrium pressure. When the temperature difference is more than 5 K in the ESOP, the influence of that is obvious for the stress of PFS. In the ESOP, the equilibrium temperature and temperature difference should be controlled within 240 K and 5 K, respectively.

Strength Analysis of Transitional Segment of Buckling Tubing Nearby the Packer in Vertical Well

2013 ◽  
Vol 634-638 ◽  
pp. 3599-3602
Author(s):  
Shao Li Zhang ◽  
Xin He Wang ◽  
Jiang Wen Xu ◽  
Yi Hua Dou ◽  
Hui Xia
Keyword(s):  
Stress Analysis ◽  
Equivalent Stress ◽  
Continuity Condition ◽  
Strength Analysis ◽  
Nonlinear Ordinary Differential Equations ◽  
Axial Pressure ◽  
Buckling Strength ◽  
Vertical Well ◽  
Maximum Equivalent Stress ◽  
Helical Buckling

The buckling deformation and stress distribution of the tubing nearby the packer would be seriously influenced by the packer constraints. This paper focused on the Strength analysis of transitional segment. The method to calculate the buckling deformation and the equivalent stress of transitional segment were derived considering the tubing boundary and continuity condition, adopting the fourth-order nonlinear ordinary differential equations and helical buckling strength method. This study makes up for the weakness of traditional stress analysis of the buckling tubing nearby the packer in vertical well, improves the pertinence and accuracy of stress analysis of buckling tubing. The results of analysis show that with the axial pressure increasing lead to the length of the transitional segment irregular fluctuations and the maximum equivalent stress increasing. The equivalent stress would gradually reduce and finally approach a constant.

Stress Analysis of Perforated Plate Based on ANSYS

2013 ◽  
Vol 652-654 ◽  
pp. 1372-1376
Author(s):  
Ying Mei ◽  
Mei Li ◽  
Jie Song ◽  
Xiao Xue Gao
Keyword(s):  
Stress Analysis ◽  
Maximum Stress ◽  
Equilibrium Distribution ◽  
Equivalent Stress ◽  
Perforated Plate ◽  
Simulation Models ◽  
Symmetry Center ◽  
Pore Area ◽  
Maximum Equivalent Stress ◽  
Pore Number

Based on nonlinear FEA software ANSYS, 3D simulation models of eighteen-type perforated plate that have different open-pore number was established. Analysis results indicate: Maximum equivalent stress of perforated plate mainly takes place on symmetry center of outer open-pore for open-pore area. With increasing open-pore number, maximum equivalent stress and each-direction maximum stress of perforated plate presents to enlarge trend. When open-pore number less than or equal to twelve, value of maximum equivalent stress mainly is decided by Z-direction maximum stress. When open-pore number greater than twelve, value of maximum equivalent stress mainly is decided by Y-direction maximum stress. When ratio m less than 2, with increasing ratio m, maximum equivalent stress and each-direction maximum stress of perforated plate presents to reduce trend. When X-direction and Y-direction open-pore numbe of perforated plate is basically equilibrium distribution, X -direction maximum stress is about equle to half of maximum equivalent stress.

Structure Optimization on Sensitivity Analysis for Ultra-Supercritical Bypass Valve

2012 ◽  
Vol 619 ◽  
pp. 282-285
Author(s):  
Long Yu ◽  
Shu Rong Yu
Keyword(s):  
Sensitivity Analysis ◽  
Equivalent Stress ◽  
Target Function ◽  
Structure Optimization ◽  
Mathematics Model ◽  
Sampling Point ◽  
Design Variables ◽  
Bypass Valve ◽  
Maximum Equivalent Stress ◽  
The Relationship

Given mathematics model and boundary conditions of the structure optimization for ultra-supercritical bypass valve (UBV) in operation. FEM results showed that 10 design variables and 178 sampling points are chosen for iteration, and the relationship between maximum equivalent stress and structure parameters are obtained by sensitivity analysis. By using Monte-Carlo method, the quantity of optimized sampling point can be reduced by 17% and calculation time is reduced clearly. The higher sensitivity parameters affecting target function are found by contrasting response degree, and improving the parameters directly is the way that enhances intensity of the UBV. Base on the sensitivity analysis, the linearized equivalent stress of weak place in the UBV can be reduced by 44% with the safety performance enhanced.

Stress Analysis of an Annular Sector Semicircular Cross Section Vessel

2014 ◽  
Vol 574 ◽  
pp. 68-72 ◽  
Author(s):  
Qing Gang Liu ◽  
Jun Wang ◽  
Xin Qi Yu ◽  
Yan Shu Guo ◽  
Pei Ying Peng
Keyword(s):  
Stress Analysis ◽  
Cross Section ◽  
Equivalent Stress ◽  
Finite Element Software ◽  
Inner Surface ◽  
Maximum Equivalent Stress ◽  
Annular Sector ◽  
Sector Plate ◽  
Annular Sector Plate ◽  
Semicircular Cross Section

By using finite element software ANSYS, stress analysis was conducted to the annular sector semicircular cross section vessel which was made up of an annular sector plate, two semicircular plates and a semi-cylindrical with thicknesses of 20mm. The analysis results show that the maximum equivalent stress of the annular sector plate appears in the middle of the plate, and the maximum equivalent stress of the semicircular plate and the semi-cylindrical appear in the inner surface of the connections. The equivalent stress distribution trend of the annular sector plate, semicircular plates and the semi-cylindrical was obtained. Through these researches, the distribution trend of equivalent stress provided a reference for the design of the annular sector semicircular cross section vessel.

scholarly journals Empirical Research on the Relationship amongst Renewable Energy Consumption, Economic Growth and Foreign Direct Investment in Kazakhstan and Uzbekistan

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 332
Author(s):  
Janusz Grabara ◽  
Arsen Tleppayev ◽  
Malika Dabylova ◽  
Leonardus W. W. Mihardjo ◽  
Zdzisława Dacko-Pikiewicz
Keyword(s):  
Economic Growth ◽  
Foreign Direct Investment ◽  
Renewable Energy ◽  
Energy Consumption ◽  
Direct Investment ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Renewable Energy Consumption ◽  
Integration Test ◽  
The Relationship

In this contemporary era, environmental problems spread at different levels in all countries of the world. Economic growth does not just depend on prioritizing the environment or improving the environmental situation. If the foreign direct investment is directed to the polluting industries, they will increase pollution and damage the environment. The purpose of the study is to consider the relationship between foreign direct investment in Kazakhstan and Uzbekistan and economic growth and renewable energy consumption. The study is based on data obtained from 1992 to 2018. The results show that there is a two-way link between foreign direct investment and renewable energy consumption in the considered two countries. The Granger causality test approach is applied to explore the causal relationship between the variables. The Johansen co-integration test approach is also employed to test for a relationship. The empirical results verify the existence of co-integration between the series. The main factors influencing renewable energy are economic growth and electricity consumption. To reduce dependence on fuel-based energy sources, Kazakhstan and Uzbekistan need to attract energy to renewable energy sources and implement energy efficiency based on rapid progress. This is because renewable energy sources play the role of an engine that stimulates the production process in the economy for all countries.

scholarly journals Does Foreign Direct Investment Influence Renewable Energy Consumption? Empirical Evidence from South Asian Countries

Energies ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3470
Author(s):  
Xueqing Kang ◽  
Farman Ullah Khan ◽  
Raza Ullah ◽  
Muhammad Arif ◽  
Shams Ur Rehman ◽  
...  
Keyword(s):  
Foreign Direct Investment ◽  
Renewable Energy ◽  
Sri Lanka ◽  
South Asian ◽  
Environmental Sustainability ◽  
Direct Investment ◽  
Least Square ◽  
Asian Countries ◽  
Ordinary Least Square ◽  
The Relationship

In selected South Asian countries, the study intends to investigate the relationship between urban population (UP), carbon dioxide (CO2), trade openness (TO), gross domestic product (GDP), foreign direct investment (FDI), and renewable energy (RE). Fully modified ordinary least square (FMOLS) and dynamic ordinary least square (DOLS) models for estimation were used in the study, which covered yearly data from 1990 to 2019. We used Levin–Lin–Chu, Im–Pesaran–Shin, and Fisher PP tests for the stationarity of the variables. The outcomes of the panel cointegration approach looked at whether there was a long-run equilibrium nexus between selected variables in Pakistan, Bangladesh, India, and Sri Lanka. The FMOLS approach was also used to assess the relationship, and the results suggest that there is a significant and negative nexus between FDI and renewable energy in south Asian nations. The study’s findings reveal a strong and favorable relationship between GDP and renewable energy use. In South Asian nations (Sri Lanka, Pakistan, India, and Bangladesh), the FMOLS and DOLS findings are nearly identical, but the authors used the DOLS model for robustification. According to the findings, policymakers in South Asian economies (Sri Lanka, Pakistan, India, and Bangladesh) should view GDP and FDI as fundamental policy instruments for environmental sustainability. To reduce reliance on hazardous energy sources, the government should also reassure financial sectors to participate in renewable energy.

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