Journal of Integrated Design and Process Science

Vulcanizing forming mould is considered to be one of the key elements to determine the quality of compound rubber bearings, to make up for the shortcomings of empirical design methods in the design of vulcanizing forming mould. A new approach is put forward to achieve the optimal design of temperature field by integrating the genetic algorithm (GA) and finite element analysis (FEM). Firstly, the mathematical model of the temperature difference of the inner surface of the mould is established according to the principle for linear superposition of steady state heat transfer. Then different optimization schemes are designed as to the specific working conditions. Subsequently, the GA is used to optimize the structure and power distribution of the electric heating pipe as two variables. Finally, the FEM takes over the job to complete the analysis on the design results. The results show that the optimal design results are in agreement with the numerical simulation results, by which the effectiveness of the method is proved.

The influence of inclination angle of the grain boundary (GB) and the stress sign (negative or positive) on the mechanical performance of ∑13 aluminium (Al) bicrystals are investigated via molecular dynamic (MD) simulations of the deformation process. The mechanical response of the slanted GB ranging from 0° to 60° shows that (i) the peak yield needed for dislocation nucleation is inversely proportional to the magnitude of the angle; (ii) compression favors greater yield stresses of the slanted bicrystals than tension. Corresponding Schmid factors give an insight on how the inclination angle tends to compromise the elasticity of the bicrystal. Moreover, a considerable discrepancy in plasticity is also identified by dynamic monitoring of the atomic configuration and HCP atoms. This study provides a prediction of the impact of inclination angle on mechanical behaviour of bicrystal metals.

Performance-based Generative Architecture Design (PGAD) is a design approach based on coupling parametric modelling with performance simulation and optimization tools. It is highly efficient and advanced but design problems, because of their many complex issues, are often ill-defined and must be somehow preprocessed and streamlined. References are collected from paper indexing databases and are analyse with the software, Citespace. When it comes to detailed contents, comparison and clustering are conducted to illustrate how design problems are formulated among research papers. In the literature, five categories of building components are frequently pursued. To obtain these building components by the PGAD method, there are eight types of relationships among building components, decision variables, performance objectives, and performance indicators that should be contemplated. After exposing these correlations, various implementation software and tools for realizing the PGAD are compared. Four types of integrated design environment are identified and compared based on their advantages and disadvantages. This study aims at investigating the status quo of the topic and promoting PGAD development.