Based on a hybrid road approach, a reliable process of fatigue load prediction is proposed. This approach known as Time Waveform Replication (TWR) relies on test data and multi-body model. The test data is used to back-calculate the hybrid road profile that will cause the same forces on the multi-body model. The road load is measured on the proving ground, and simulation of the multi-body model is ran by TWR to back-calculate the hybrid road profile. The simulation signals are verified by the experimental signals collected by wheel force transducers (WFT) and acceleration sensors.
In order to meet the user needs and enhance the brand identification, a new method of brand products design based on Kansei engineering is presented. Firstly, users’ implicit semantic information is extracted using semantic differential method, and the brand gene pool is established. Secondly, according to analytic hierarchy process (AHP), genes which meet the goal of semantic information are selected from the gene pool, which can be used to constitute a new product. Then the whole frame of product is constructed, and the final design project can be quickly obtained after some adjustments. Finally, a new brand from a furniture design company is taken as an example to illustrate the specific of this new approach. By employing this method, a series of new sofa are designed.
This study theoretically analyzed the cutting process of castor and determined the structural parameters of the key component of the castor disc-cutting device, aiming to obtain the optimal operation parameter combination and reduce the cutting resistance and power consumption during the harvesting process. The effects of the cutting-disc thickness, cutting-disc rotational speed, feeding speed, and edge angle on the cutting power consumption were studied using an orthogonal rotation combination experiment. The response surface method was used to optimize the parameters, and the mathematical relationship model between the cutting power consumption and each factor was established to determine the optimal parameter combination for disc cutting. The simulation results showed that the optimal combination of cutting parameters was cutting-disc thickness of 3 mm, cutting-disc rotational speed of 550 r/min, feeding speed of 0.6 m/s, and edge angle of 20°. Under these conditions, the cutting power consumption was 1.20375 J. The test results were basically consistent with the model prediction results. Therefore, this study provided a theoretical basis and reference for the design and improvement of castor harvesters.
In this paper, integrated TRIZ with industrial design practice, aimed at changing the shortcomings of the traditional folding structures of bicycles and making folding speed faster than before. Applied the technology conflict resolution method of TRIZ to analysis and transform the contradictions of rapid folding bicycle, and selected the appropriate innovative principles to resolve these conflicts, so as to balance parameters existed in the product optimization and find out the direction of inventing and improving rapid folding bicycle.
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