{"title":"散装固体螺旋输送中的周期性磨损建模:通过实验和DEM仿真验证的基于表面轮廓的框架","authors":"Weijie Yang , Yangyi Zhang , Yuan Tan","doi":"10.1016/j.apt.2025.105067","DOIUrl":null,"url":null,"abstract":"<div><div>The vertical screw ship unloader plays a vital role in the transportation of bulk cargo at ports. However, severe wear of screw pipe wall remains a major challenge, often shortens its service life and increases maintenance costs. Existing models cannot accurately predict wear progression or assess its lifespan under different operating conditions. In this study, a novel predictive framework, which did not require on-site disassembly or operational interruption, was proposed to assess screw pipe wear. In the framework, the Archard wear model was integrated with the single-particle method and a continuous medium assumption. Its effectiveness was validated by both experimental results and discrete element method (DEM) simulations. With this framework, particle accumulation patterns within the screw conveyor were classified into four types. For each type, a corresponding periodic wear model was proposed and its prediction results were closer to experimental results than conventional DEM-based predictions. Parametric analysis indicated that screw rotational speed had the more significant impact on wear intensity than the filling degree of materials. Additionally, the study confirmed periodic wear along screw pipe and similar wear rates periodically occurring at intervals equal to screw pitch.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"36 11","pages":"Article 105067"},"PeriodicalIF":4.2000,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Periodic wear modelling in bulk solids screw conveying: A surface-profile-based framework validated through experiment and DEM simulation\",\"authors\":\"Weijie Yang , Yangyi Zhang , Yuan Tan\",\"doi\":\"10.1016/j.apt.2025.105067\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The vertical screw ship unloader plays a vital role in the transportation of bulk cargo at ports. However, severe wear of screw pipe wall remains a major challenge, often shortens its service life and increases maintenance costs. Existing models cannot accurately predict wear progression or assess its lifespan under different operating conditions. In this study, a novel predictive framework, which did not require on-site disassembly or operational interruption, was proposed to assess screw pipe wear. In the framework, the Archard wear model was integrated with the single-particle method and a continuous medium assumption. Its effectiveness was validated by both experimental results and discrete element method (DEM) simulations. With this framework, particle accumulation patterns within the screw conveyor were classified into four types. For each type, a corresponding periodic wear model was proposed and its prediction results were closer to experimental results than conventional DEM-based predictions. Parametric analysis indicated that screw rotational speed had the more significant impact on wear intensity than the filling degree of materials. Additionally, the study confirmed periodic wear along screw pipe and similar wear rates periodically occurring at intervals equal to screw pitch.</div></div>\",\"PeriodicalId\":7232,\"journal\":{\"name\":\"Advanced Powder Technology\",\"volume\":\"36 11\",\"pages\":\"Article 105067\"},\"PeriodicalIF\":4.2000,\"publicationDate\":\"2025-09-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Powder Technology\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0921883125002882\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883125002882","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Periodic wear modelling in bulk solids screw conveying: A surface-profile-based framework validated through experiment and DEM simulation
The vertical screw ship unloader plays a vital role in the transportation of bulk cargo at ports. However, severe wear of screw pipe wall remains a major challenge, often shortens its service life and increases maintenance costs. Existing models cannot accurately predict wear progression or assess its lifespan under different operating conditions. In this study, a novel predictive framework, which did not require on-site disassembly or operational interruption, was proposed to assess screw pipe wear. In the framework, the Archard wear model was integrated with the single-particle method and a continuous medium assumption. Its effectiveness was validated by both experimental results and discrete element method (DEM) simulations. With this framework, particle accumulation patterns within the screw conveyor were classified into four types. For each type, a corresponding periodic wear model was proposed and its prediction results were closer to experimental results than conventional DEM-based predictions. Parametric analysis indicated that screw rotational speed had the more significant impact on wear intensity than the filling degree of materials. Additionally, the study confirmed periodic wear along screw pipe and similar wear rates periodically occurring at intervals equal to screw pitch.
期刊介绍:
The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide.
The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them.
Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)