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Computer-Aided Ergonomic Design and Assembly of a Domestic String Hopper Machine
Published in Kaushik Kumar, Sridhar B. Babu, Industrial Automation and Robotics, 2023
C. Vigneswaran, G. Madhan Mohan, M. Vignesh Raja, E. Selva Vignesh
Ergonomic assessment (RULA analysis) was performed using CREO 5.0 software. The digital manikin had been developed and imported into the software. The 50th percentile manikin has been chosen for the assessment. The foot of the manikin has been constrained with the plane representing the floor. The hand of the manikin has been positioned as per the working posture. The evaluated RULA score for the right arm has been found to be 2. As per the RULA action-level chart, the RULA score of 2 is an acceptable posture. The RULA analysis has been repeated for the left arm. The RULA score for both arms was evaluated, and the scores were acceptable. The prototype was tested in a real-time environment for the extrusion of steam-cooked rice flour and the flour strings were produced [8]. The real posture was evaluated for RULA score. Also, the RULA score for both the right and left hands of the operator has been found to be 2. The digital mockup and the experimental values are found to be the same and, hence it has been verified both digitally and experimentally that the machine was ergonomically pleasing. The capacity of the machine was tested further; the flour has been fed into the hopper and the rate of extrusion was calculated. The extrusion rate was found to be 2 kg/hour with a die hole size of 5 mm diameter. The extrusion was repeated for few more times and it was found to be consistent.
Convergence of PLM with IIoT
Published in Uthayan Elangovan, Product Lifecycle Management (PLM), 2020
Collaboration is the most challenging part of the product design and development process. Unlocking the ingenious potential throughout the NPD group offers an inspiration to development by involving all stakeholders and cross-functional team from starting in a workshop-based strategy, thereby developing a feeling of common possession in the success of introducing the product to market. In the very early days, hand-drawn to CAD-based design product managers in manufacturing industry have been deliberately concerned with the pressing opportunities of design innovation: starting with paper illustrations and gradually transforming to digital drawing through digital mockup. It opens up stage to concurrent engineering, involving methods, processes, and tools to serve all functional designs. Today in the modern digitalized age, integration of functional and industrial design teams is possible by digital collaborate engineering.
Building information management for tunneling
Published in Daniele Peila, Giulia Viggiani, Tarcisio Celestino, Tunnels and Underground Cities: Engineering and Innovation meet Archaeology, Architecture and Art, 2020
F. Robert, A. Rallu, C. Dumoulin, N. Delrieu, M. Rives, M. Beaufils
The digital mockup of a manufactured product focuses on a “new” product. Regarding buildings, the BIM describes only the building itself, often neglecting the surrounding environment. Foundations and connections to the external networks are modeled, but the surrounding ground is often omitted, or described only at its final stage. The focus is clearly put on the definition of the delivered product, mainly on the design. The construction steps including stop pouring concrete, the necessary tools, logistics and temporary elements are not modeled.
Simulation in the design and operation of manufacturing systems: state of the art and new trends
Published in International Journal of Production Research, 2020
A digital mock-up (DMU) consists of 3D models, which integrate the mechanical structure of a system in a virtual prototype, reducing time and money and facilitating collaborative product design (Sibois et al. 2013). The developed DMU visualisation systems can import large CAD models into the memory of a computer, while simultaneously being based on a compression representation with triangular patches (Sun 2007). More recently, AIRBUS Military researches the implementation of the industrial Digital Mock-Up (DMU) concept in order to support the industrialisation process of a medium-size aero-structure (Menéndez et al. 2013). Finally, colouring the DMU enables highlighting the required attributes from the customers (Shehab et al. 2010). Future developments will focus on expanding DMUs to design services (Menéndez et al. 2013). Towards the extension of DMU technology to digital manufacturing field (2016) introduced a framework of space optical remote sensor using DMU and based on ‘simulation-driven design’ the performance and the product quality assurance are checked. The integration of Modelica simulation software with a 3D digital mock-up described by (Matsuda et al. 2017) to translate product concepts to 3D models.