Engineering Solid Mechanics最新文献_第2页

An investigation on mechanical properties of 3D pen fused zones for additive manufactured parts 增材制造零件三维笔焊区力学性能研究

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.3.003

Senthil Maharaj Ramesh Kennedy, R. Robert, P. Seenikannan, Vasanthanathan Arunachalam, K. Amudhan

{"title":"An investigation on mechanical properties of 3D pen fused zones for additive manufactured parts","authors":"Senthil Maharaj Ramesh Kennedy, R. Robert, P. Seenikannan, Vasanthanathan Arunachalam, K. Amudhan","doi":"10.5267/j.esm.2023.3.003","DOIUrl":"https://doi.org/10.5267/j.esm.2023.3.003","url":null,"abstract":"Additive manufacturing has been one of the most used techniques in the recent years because of its capabilities to fabricate complex structures as required by customer and industrial need from a 3D computer-aided design model without the usage of any tooling, dies and heavy machinery makes it a step ahead in the present manufacturing techniques. In the current study the author’s focus on the welding or joining of additive manufactured Polylactic acid (PLA) parts made by Fused Deposition Modeling (FDM). There are several techniques for welding these additive manufactured parts. This study mainly focuses on the joining of 3D printed PLA parts using a 3D pen and investigations on its mechanical properties experimentally. It is a very cheap and effective technique when compared to the other welding methods. This could overcome the drawback of small bed size in most 3D printers by joining smaller parts and it can also be used for repairing the defects caused during the 3D printing. Moreover the experimental testing of the mechanical properties also confirmed that the tensile, flexural and impact strength of 3D pen welded specimens retrieved above 70% of the strength to the original PLA specimen proving it to be a very effective method.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70761692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

On the possibility of implementing a simple shear in the cross-section of metal materials during caliber rolling 在口径轧制过程中，在金属材料横截面上实现简单剪切的可能性

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.3.004

Maxat Abishkenov, Z. Ashkeyev, K. Nogaev, Yerbol Bestembek, Kuathan Azimbayev, Ilgar Tavshanov

引用次数: 0

Investigating the fracture toughness of the self compacting concrete using ENDB samples by changing the aggregate size and percent of steel fiber 通过改变骨料粒径和钢纤维掺量，研究了自密实混凝土的断裂韧性

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.7.006

S. Mousavi, Mohammad Ghasemi, M. Dehghani

{"title":"Investigating the fracture toughness of the self compacting concrete using ENDB samples by changing the aggregate size and percent of steel fiber","authors":"S. Mousavi, Mohammad Ghasemi, M. Dehghani","doi":"10.5267/j.esm.2023.7.006","DOIUrl":"https://doi.org/10.5267/j.esm.2023.7.006","url":null,"abstract":"In reality, concrete structures are normally under various loadings, and results of different studies have shown that cracks in these structures and their materials, due to their nature as well as the loading type, do not develop along the crack plane (pure mode I); rather, they expand under mixed modes, making the crack growth studies under these modes a very important issue. In the crack growth phenomenon, the fracture toughness is a very effective parameter usually calculated by ENDB samples because they are easy to handle. In this study, several samples were made by changing the maximum aggregates size (dmax = 9.5, 12.5 & 19 mm) and the amount of hooked-end steel fibers (SF = 0.1, 0.3 & 0.5%), and tested under different loading modes (pure/mixed modes I and III) using the strain control jack device. According to the results, the lowest fracture toughness belonged to pure mode III, aggregates with dmax = 12.5 mm performed better in the self-compacting concrete reinforced with steel fiber, Also, the results show that the increasing trend of steel fibers does not have a positive effect on the fracture toughness performance.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70762636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Fracture toughness evaluation of zeolite/polyurethane-filled woven panels 沸石/聚氨酯填充编织板断裂韧性评价

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.1.005

H. Safari, M. Karevan, H. Nahvi

{"title":"Fracture toughness evaluation of zeolite/polyurethane-filled woven panels","authors":"H. Safari, M. Karevan, H. Nahvi","doi":"10.5267/j.esm.2023.1.005","DOIUrl":"https://doi.org/10.5267/j.esm.2023.1.005","url":null,"abstract":"Recently, due to their extraordinary strength-to-weight ratio and multi-functional applications, three-dimensional woven fiberglass sandwich structures have become a well-received topic by researchers and manufacturers. Nevertheless, using light and foam absorber materials as injected fillers within sandwich cores can improve their overall mechanical performance and, in particular, their fracture toughness behavior. This study evaluates the fracture toughness of three-dimensional woven fiberglass sandwich panels filled with natural nano-structured zeolite/polyurethane foams injected between their parallel panels. The Single-Edge Notched Bend test was carried out to understand the effect of the injected foam on the mode-I fracture toughness response. It is demonstrated that the polyurethane foam reinforced with natural nano-structured zeolite particles highly improved the fracture toughness of sandwich core panels. It was found that the presence of vertical glass yarns within the sandwich panel gallery resulted in a significantly higher toughness compared with typical sandwich panels of no reinforcing vertical columns confirmed by the crack propagation and observed failure mode. The SEM and EDX analyses were used to better understand the correlations amongst the specimen morphology, the cracks behavior, and the toughness exhibited by the fabricated specimens.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70761750","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Marine hatch covers using light-weight GFRP composites: Experiments and finite element simulations 船用舱口盖使用轻质玻璃钢复合材料:实验和有限元模拟

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.5.006

A. Vasanthanathan, K. Amudhan, M. Nithish Karthick, V. Pandeeswaran, K. Yogesh Rahav

{"title":"Marine hatch covers using light-weight GFRP composites: Experiments and finite element simulations","authors":"A. Vasanthanathan, K. Amudhan, M. Nithish Karthick, V. Pandeeswaran, K. Yogesh Rahav","doi":"10.5267/j.esm.2023.5.006","DOIUrl":"https://doi.org/10.5267/j.esm.2023.5.006","url":null,"abstract":"In this paper, Finite Element Analysis was used to simulate ship hatch covers with different grid geometries viz. Square grid, Inclined grid, Diamond grid and Honeycomb grid. The entire finite element analysis results were generated by ANSYS® 2022 workbench environment. The hatch cover provides an air tight barrier protection for the cargo. For the present simulation the original hatch cover dimensions are used (21000 × 14000 × 300 mm). The principle objective of the present paper is aimed at proposing a light-weight material, so called glass fibre reinforced plastic material over the existing steel to reduce the weight for the cargo ship to improve the efficiency by reducing fuel consumption so that dead weight is downgraded. Glass fibre reinforced hatch cover also reduces man power for the process of handling the hatch cover. Based upon the finite element analysis outcomes of different grid geometries are Square, Inclined, Diamond, Honeycomb optimal core grid of hatch cover was chosen. A scaled down model of hatch cover using glass fibre reinforced plastic with an optimal grid structure has been also developed in this paper.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70762048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Optimization and finite element modeling of orthogonal turning of Ti6Al4V alloys: A comparative study of different optimization techniques Ti6Al4V合金正交车削优化及有限元建模:不同优化技术的比较研究

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2022.11.002

C. Sumesh, A. Ramesh

引用次数: 1

The effects of two temperature and laser pulse on modified couple stress thermoelastic diffusion beam 两个温度和激光脉冲对修正耦合应力热弹性扩散光束的影响

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2022.11.005

Rajneesh Kumar, S. Devi

引用次数: 0

Experimental investigation of tensile, flexural and hardness properties of polyester resin echinatus fiber reinforced composite material 聚酯树脂棘草纤维增强复合材料拉伸、弯曲和硬度性能的试验研究

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.1.001

Belete Ambachew Mekonen, T. Bogale

{"title":"Experimental investigation of tensile, flexural and hardness properties of polyester resin echinatus fiber reinforced composite material","authors":"Belete Ambachew Mekonen, T. Bogale","doi":"10.5267/j.esm.2023.1.001","DOIUrl":"https://doi.org/10.5267/j.esm.2023.1.001","url":null,"abstract":"Nowadays, composites made of plant-based fibers may be used to polymer resin synthetic fiber reinforced composites since they are less expensive, renewable, abundant, less abrasive, and lightweight. Echinatus fiber obtained from the stem of the echinatus plant in an abundant amount. The main objective of this study was to develop echinatus polyester-resin fiber reinforced composite material and investigate its flexural strength, hardness and tensile strength. Echinatus plant was collected and echinatus fiber was extracted by the decortication process from the echinatus plants manually, and treated with 5% NaOH for the improvement of bond and interfacial shear strength. And then, the test specimens were manufactured using a mass fraction with 0 , 45 and 90 orientations using technique of hand lay-up. The tensile strength, hardness, and flexural strength were investigated using samples that were prepared according to the ASTM standards. 70% echinatus fiber to 30% polyester composite material with 0 orientation was found as the material with maximum tensile strength of 60.60 MPa, flexural strength of 96.8 MPa, and hardness values of 44.54 HRA. Considering the mechanical properties’ experimental results, echinatus fiber-reinforced composite with 70% fiber at 0 orientation can be good substitutes for synthetic materials.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70761226","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The effect of hardness matching of rail/wheel materials on wear rate of railway wheel 轨轮材料硬度匹配对铁路车轮磨损率的影响

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.3.002

Hewan Getachew Yenealem, D. T. Redda, Awel Mohammedseid

{"title":"The effect of hardness matching of rail/wheel materials on wear rate of railway wheel","authors":"Hewan Getachew Yenealem, D. T. Redda, Awel Mohammedseid","doi":"10.5267/j.esm.2023.3.002","DOIUrl":"https://doi.org/10.5267/j.esm.2023.3.002","url":null,"abstract":"There is no rationalization for a certainty that harder wheels or rails will result in an increase in wear of the opposite side of the wheel/rail interface. This research investigated how the wear of wheel material changes when the hardness of the opposing pair is varied. Three Rail/wheel material matches; normalized UIC50 kg/m and S1002 wheel profile (Rail/wheel material 1), normalized UIC60 kg/m and whole heat treated S1002 wheel profile (Rail/wheel material 2) and rim heat treated UIC60 kg/m and whole heat treated S1002 wheel profile (Rail/wheel material 3) has been investigated using multi-body simulation software (SIMPACK) and MATLAB programming. For validation, as an experimental advantage, the wear depths measured on the wheel tread wear of the end vehicle of LRT for mileage of 50,000 km are compared to the results of numerical simulation performed. As a result, the estimated total tread wear amount after a mileage of 50,000 km is 4% larger than the experimental one. That is indeed a very good result considering that either component of the wheel wear prediction model used is neither adjustment nor calibration. From the three rail/wheel matches, Rail/wheel material 3 found to be the better material match that could resist wear significantly considering material hardness as important criteria for comparison. The study could remark that, despite the fact both wheel and rail material hardness could affect the wear performance in respected positive ways, most significant improvements are attained by improving the rail material hardness ahead of wheel material.","PeriodicalId":37952,"journal":{"name":"Engineering Solid Mechanics","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70761633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental analysis of spliced joint connections in GFRP short column 玻璃钢短柱拼接连接试验分析

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI: 10.5267/j.esm.2023.5.003

M. J. Srujan, S. Srikanth

引用次数: 0