Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science最新文献

{"title":"Research and analysis of rock breaking mechanical model of single-roller PDC compound bit","authors":"Chunyan Kong, Mingkun Yang, Yangyang Jin, Yang Li, Zhang Junfu","doi":"10.1177/09544062241272439","DOIUrl":"https://doi.org/10.1177/09544062241272439","url":null,"abstract":"In order to improve wear resistance and rock breaking efficiency of single-roller bit, a new type of bit, single-roller PDC compound bit is designed. The mechanical model of interaction between PDC teeth and rock of single-roller PDC compound bit is established, and the theoretical calculation formula of resultant force and torque generated by interaction between PDC teeth and rock on cone and bit is obtained. The rock-breaking experiment on the single-roller PDC compound bit are carried out. The results show that with the increase of front inclination angle, the axial force and radial force of PDC teeth decrease greatly at first and then tend to be stable, while the tangential force of PDC teeth decreases at first and then increases slightly; the axial force, radial force and tangential force all increase with the increase of the cutting depth; the maximum values of the three forces all appear at the position of the combined effect of the maximum cutting depth and the minimum front inclination angle. The maximum value of moment [Formula: see text] and [Formula: see text] both appear at the minimum value of h<jats:sub> C</jats:sub> and δ, while the maximum value of moment [Formula: see text] appears at the minimum value of δ. In order to reduce the acting moment generated by PDC cutter on the roller, the PDC cutter at different position heights can be designed with different front inclination angles. The rock breaking experiment results show that compared with the common single-roller bit, the single-roller PDC compound bit has higher rock breaking efficiency and better development prospect. When drilling in hard limestone, the single-roller PDC compound bit is more energy-efficient under higher WOB.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255513","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hybrid force-position coordinated control of a parallel mechanism with the number of redundant actuators equal to its DOF","authors":"Ming Han, Wangwang Lian, Jianming Liu, Dong Yang, Tiejun Li","doi":"10.1177/09544062241274704","DOIUrl":"https://doi.org/10.1177/09544062241274704","url":null,"abstract":"To address the demands for precision and load-bearing capacity in the installation of building panels, a hybrid force-position driven robot with redundant actuation has been developed. The mechanical performance of this robot is primarily governed by its central parallel mechanism, which is equipped with redundant actuators matching the degrees of freedom. Non-redundant and redundant actuators are respectively responsible for position and force control. The inclusion of redundant force-driven joints has increased the internal coupling within the mechanism. To enhance the coordination between position and force control, a hybrid synchronized control method based on cross-coupling has been proposed. Initially, kinematic and dynamic models of the parallel structure were established. Under predefined trajectories, the theoretical inputs for each actuator were calculated using inverse kinematics and dynamics. Subsequently, employing the principle of cross-coupling, the torque output from the position actuators was used as feedback. This feedback was processed by a synchronized coordination controller to adjust the output force of the redundant force-driven joints. By adjusting the output force of the redundant actuators, the torque burden on the position actuators was effectively reduced, thereby enhancing the precision of position control. Additionally, under the same load conditions, smaller power actuators could be utilized for position control, reducing the overall weight of the robot and improving its load-to-weight ratio. To validate the effectiveness of the proposed control strategy, a robotic simulation environment was established. The simulation results demonstrated significant reductions in the average torque required by the position actuators across three different trajectories, with reductions of 91.43%, 54.56%, and 80.6% respectively. Finally, the load-bearing capacity and the load-to-weight ratio of the prototype were assessed. Experimental results confirmed that the prototype achieved a load-to-weight ratio of 15.83%, validating the effectiveness of the hybrid synchronized control method based on cross-coupling.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Human-robot collaborative assembly task planning for mobile cobots based on deep reinforcement learning","authors":"Wenbin Hou, Zhihua Xiong, Ming Yue, Hao Chen","doi":"10.1177/09544062241271626","DOIUrl":"https://doi.org/10.1177/09544062241271626","url":null,"abstract":"Human-Robot Collaborative Assembly (HRCA) offers a novel solution to improve manual-based assembly manufacturing processes. However, the existing HRCA task planning approaches are limited in several aspects, such as inability to be applied effectively to mobile cobots with diverse workspaces and varying skill sets, as well as struggle in meeting the requirements of complex task structures and high-dimensional state spaces. In this paper, an interactive HRCA task planning framework based on finite Markov Decision Process (MDP) is presented, formalizing the Reinforcement Learning (RL) problem. To leverage the mobile and operational advantages of mobile cobots, a Multi-Attribute Hierarchical Task Network (MA-HTN) that enables efficient task decomposition and attribute representation is introduced. Additionally, considering state changes during assembly processes and utilizing Deep Reinforcement Learning (DRL) for handling high-dimensional decision problems, a universal DRL solving environment executed within unit time is constructed. This solving environment is based on a four-channel state diagram capable of reflecting high-dimensional state information that can be directly converted into digital tensor input for neural networks. Furthermore, to address frequent episode restarts in Deep Q-Network (DQN) algorithm and optimize task completion duration, a revival mechanism along with its enhanced algorithm are proposed. Finally, through an automobile fender bracket assembly scenario and an additional case study, the effectiveness of proposed method under varying numbers of tasks and work units is validated.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations of the effect of circular perforations and V-cut on SLTT in DPHE: An experimental analysis using IoT approach","authors":"Manoj Kumar Diwaker, Arvind Kumar","doi":"10.1177/09544062241271743","DOIUrl":"https://doi.org/10.1177/09544062241271743","url":null,"abstract":"The objective of this research is to explore the characteristics of the mean Nusselt number, friction factor, and enhancement efficiency in a double pipe heat exchanger. The emphasis lies in using short twisted tapes featuring round holes and a V-shaped cut. To conduct the experiment, an IoT-based DPHE setup was employed. In the experiment, various twisted tape configurations were examined to investigate their impact on heat transfer and pressure loss. These configurations included a full-length twisted tape and three short-length tapes with different perforation diameters. The full-length tape, with a twist ratio of x/ b = 4, spanned throughout length of the tube. In contrast, the plain short-length tape and modified short-length tapes, with the same twist ratio, were inserted in the section’s entrance. The shorter inserts, with a length ratio (LR = ls/lf) of 0.50, were compared to the full-length tape. The experimental findings demonstrated that the short-length tapes with LR = 0.50 consistently exhibited lower thermohydraulic performance compared to full-length inserts. Specifically, within the Re range of 4000–24,000, Nusselt numbers and friction factors for the short inserts were approximately 11%, 9.1%, and 6.1% lower, and 20.6%, 16.1%, and 11.2% lower, respectively, compared to the full-length inserts.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oil and gas pipeline robot localization techniques: A review","authors":"Yujia Li, Xiao Huang","doi":"10.1177/09544062241272431","DOIUrl":"https://doi.org/10.1177/09544062241272431","url":null,"abstract":"Globally, pipelines are the primary means for transporting resources. To ensure the safety and reliability of pipeline transportation, it is essential to regularly use pipeline robots for inspections. Localization techniques for these robots are critical as they determine the real-time position and status of the robot inside the pipeline, playing an extremely important role in pipeline operations. Understanding the latest research trends in pipeline robot localization techniques can help advance the overall development of the pipeline field and reduce the potential for research duplication. This paper reviews the global developments in pipeline robot localization techniques over the past decade, categorizing them into three major methods: in-pipe localization, out-of-pipe localization and multi-source information fusion localization. It analyzes the fundamentals, strengths and weaknesses of eight major localization techniques for pipeline robots, identifies the current limitations and solutions in these technologies, discusses the field test analysis and practical design factors, and anticipates the open research challenges and future prospects of this field.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parameter effects on performance of piezoelectric wind energy harvesters based on the interaction between vortex-induced vibration and galloping","authors":"Xiaokang Yang, Bo Niu, Kui He, Yahui Liu, Ruijie Xie, Bingke Xu","doi":"10.1177/09544062241272433","DOIUrl":"https://doi.org/10.1177/09544062241272433","url":null,"abstract":"Our previous research experimentally validated that the interaction between vortex-induced vibration and galloping is an effective method for enhancing the performance of piezoelectric wind energy harvesters under low wind speed conditions. We proposed a distributed-parameter electromechanical coupling model as well. This study aims to investigate the effects of various parameters and optimize the performance of VIV-galloping interactive piezoelectric wind energy harvesters. Initially, we assessed the applicability of the model under different circuit and aerodynamic force conditions and discussed boundary and convergence conditions by replicating previous results. Further, simulations were performed to analyze the effects of the structural parameters of the bluff body and piezoelectric beam. The width or depth of the bluff body significantly influenced the low critical wind speed, interactive occurrence, and electrical output. To achieve a balance between material cost and electrical benefit, we recommend positioning the electrode length from the fixed end with a coverage ratio of at least 60%. Additionally, the output power is highly sensitive to the piezoelectric beam length, but reducing it results in a higher natural frequency and critical wind speed. We fabricated and tested four prototypes, which have demonstrated significantly higher power densities compared with previously reported values at the same wind speed.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on tool wears in turning Al2219, unhybrid and hybrid metal matrix nano composites by CCD design of experiment","authors":"NG Siddesh Kumar, R Suresh, C Durga Prasad, L Shivaramu, NH Siddalingswamy","doi":"10.1177/09544062241278127","DOIUrl":"https://doi.org/10.1177/09544062241278127","url":null,"abstract":"In this article, Aluminum (Al2219) as a matrix, and particles of n-B<jats:sub>4</jats:sub>C and MoS<jats:sub>2</jats:sub> were chosen as reinforcements. By means of the stir casting technique, the unhybrid and hybrid nano metal matrix composites were prepared. The turning experiment was done through CCD design of experiment with TiN coated carbide insert using a Computer Numerically Controlled Lathe. Also, for turned inserts tool wear measurement was done using a Mitutoyo profile projector with digital readout. By ANOVA the significant contribution for tool wear of each parameter can be identified and the confirmation test is performed in sort to validate the tool wear results. Furthermore, the formation of chips during turning nano MMCs (unhybrid and hybrid) are studied for different feed rates ( f) and cutting speeds ( v) at 0.5 mm constant depth of cut. The outcome showed that both increases in cutting speed and feed rate increase the tool wear. For Al 2219, unhybrid and hybrid nano metal matrix composites feed rate is the important factor. The value of tool wear of the Al2219 matrix is minimal and for unhybrid nano composite is maximum. The leading wear mechanism in unhybrid nano composite is abrasion. Moreover, with the addition of 2%MoS<jats:sub>2</jats:sub> in the hybrid nanocomposite the tool wears is decreased. The development of Build Up Edge (BUE) was seen on the flank face of the cutting tool for hybrid nanocomposite at 0.5 mm depth of cut, (v = 114.64 m/min) and (f = 0.441 mm/rev). The obtained % error among the modeled and experimental values is &lt;5% and it is well within the limit. The analysis of chip formation was studied for nanocomposites at lower as well as higher feed rates, cutting speeds, and constant depth of cut during turning.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142269014","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of machine learning in rotary ultrasonic-assisted orthopedic bone drilling: A biomechanical pull out in vitro study","authors":"Raj Agarwal, Jaskaran Singh, Vishal Gupta","doi":"10.1177/09544062241277739","DOIUrl":"https://doi.org/10.1177/09544062241277739","url":null,"abstract":"Bone drilling is a mechanical, thermal coupling process utilized in orthopedics for provision of rigid internal fixation and treatment of fractured bone. Rotary ultrasonic-assisted bone drilling (RUABD) has achieved noteworthy interest in orthopedic practice due to its ability to enhance biomechanical pullout strength. Drilling parameters used during orthopedic surgeries significantly impact the holding power, initial implant stability and pullout strength. It is difficult for surgeons to predict push-out strength at the interface of bone and screw. An intelligent approach could involve utilizing machine learning (ML) to train and test independent drilling parameters, thereby predicting pullout strength and optimizing holding strength. Therefore, the present work focused on leveraging ML models during RUABD to predict pullout strength at the bone-screw interface. The monitoring of various drilling parameters (including insertion angle, feedrate, rotational speed, and ultrasonic amplitude) was conducted. Multiple ML models were employed to forecast the pullout strength at the interface between bone and screw. The SVR-based ML model exhibited the most accurate prediction among all models, with the lowest error metrics observed. ML algorithms can be leveraged for robust prediction of biomechanical pullout strength to upsurge holding strength and avoid screw loosening.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anisogrid lattice structure in thermoplastic composite by filament gun deposition","authors":"Fabrizio Quadrini, Daniele Santoro, Loredana Santo","doi":"10.1177/09544062241279014","DOIUrl":"https://doi.org/10.1177/09544062241279014","url":null,"abstract":"A new method to manufacture thermoplastic composite parts has been used to produce anisogrid lattice structures. Filament gun deposition consists of a hot-melt gun loaded with narrow thermoplastic prepreg tapes. Anisogrid lattice structures have been prototyped with 3 different geometries and 5 different numbers of layers (from 4 to 8) by using a metallic pattern and E-glass/polypropylene prepregs. Scanning calorimetry and bending tests of multi-layer samples have been used to characterize thermoplastic prepregs. Anisogrid lattice structures have been tested under tensile loads. A finite element model has been used to predict mechanical stiffness of these structures by using material properties coming from the sample characterization. Numerical models have been developed with a batch-type parametric approach to rapidly evaluate the combined effect of geometric and material parameters. A good agreement has been found between experimental and numerical data with an average difference about 4%.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Behavior of sandwich structures with 3D-printed auxetic and non-auxetic cores under low velocity impact: Experimental and computational analysis","authors":"Marwa Allouch, Hana Mellouli, Hanen Mallek, Mondher Wali, Fakhreddine Dammak","doi":"10.1177/09544062241277310","DOIUrl":"https://doi.org/10.1177/09544062241277310","url":null,"abstract":"In recent years, impact-resistant structures are highly sought after in various fields such automotive and aerospace applications as they proved notable performances, garnering significant success. The aim of this study is to assess the behavior of the 3D-printable honeycombs subjected to low velocity impact, for providing insights into absorbed energy for different core designs: hexagonal, auxetic, and rectangular, considering an equal number of cells across all designs. This work reports the computational and experimental studies conducted for sandwich structures under different impact loading. The experimental impact tests are carried out using a drop weight impact-testing machine. The examined specimen comprises two face-sheets and architected cell core fabricated through the Fused Filament Fabrication (FFF) process made of polylactic acid (PLA). Variations in the geometric design of the cells result in the formation of cores with auxetic and non-auxetic topologies. Uniaxial tensile tests are performed to identify the mechanical properties of the involved biopolymer. The second attempt consists on comparing three architectural core structures under impact test using experimental and computational methods. Our findings highlight the specific influence of core topology on energy absorption in 3D-printed sandwich structures. Results indicate that while all three configurations (hexagonal, re-entrant, and rectangular) demonstrate comparable energy absorption values, the specific mechanisms and efficiencies vary, with re-entrant cores exhibiting distinct behaviors under impact.","PeriodicalId":20558,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142255522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}