Conceptual Design Method Based on Behavior Re-Creation

2007 ◽  
Vol 10-12 ◽  
pp. 198-202
Author(s):  
H.B. Miao

Conceptual design for the mechanical products is the most important and complex phase. Most of the human’s creativity is exhibited in this phase. So many researchers in the world have made researches on its theory and methodology. So far there exists an evident limitation for the modern conceptual design methodology. That is to say, the design scheme obtained form conceptual design is only one solution to the given design problem, which cannot guarantee the creativity and novelty of the design scheme. In order to improve the creativity of conceptual design, the re-creation process model for the intelligent conceptual design is presented in this paper based on function-behavior-structure model. This model expanded the problem’s solution space by degrading the space of behavior and granularity, and describing the behavior space using the more basic behavior. The key of re-creation process model is the transformation of behavior and granularity space. Taking the theory of quotient space as the math description tool, the transformation for the space of behavior and granularity is studied in detail in this paper. At last, an example is given to prove that it is easy to obtain the novel and creative design scheme applying the method presented in this paper.

2011 ◽  
Vol 201-203 ◽  
pp. 1392-1395
Author(s):  
Hong Bin Miao

Conceptual design is the premise of the detail design and could fully embody the human’s creativity, so it has become the core step for the new product’s development. In order to improve the creativity of conceptual design, the re-creation process model for the intelligent conceptual design is presented in this paper based on function-behavior-structure model. This model expanded the problem’s solution space by degrading the space of behavior and granularity, and describing the behavior space using the more basic behavior. At last, an example is given to prove that it is easy to obtain the novel and creative design scheme applying the method presented in this paper.


Author(s):  
Yanwei Zhao ◽  
Guoxian Zhang

On the foundation summing up existing intelligent conceptual design method, this paper puts forward the research content, characters, path, and method of the conceptual design of extension for mechanical products. This paper rounds the core technology of intelligent conceptual design to research the modeling method of extension design in function-principle-layout-configuration. It includes the function expression, function decomposition and synthesis, function illation and decision. The computers are utilized to simulate the human dialectic thought when resolve problems in this method. The given example shows that the extension method has been applied in the field of conceptual design for mechanical products. This method has important significance to resolve the bottleneck problem of theory studying and engineering realizing of intelligent CAD.


2011 ◽  
Vol 341-342 ◽  
pp. 286-290
Author(s):  
Xiao Ping Chen ◽  
Jin Rong ◽  
Ru Fu Hu

Machinery industry changes with each passing day, asking for the more and more importance of the machinery industry performance. The innovative design needs to be used to tools designing for improving the work more efficiency. Take the wrench product designing as an example, this article analyzes the issue of the mechanical products innovation, applies the theories of innovation to a manual wrench innovative design and puts forward the thought of the wrench innovative design scheme, principles and the design process. In the end, the design scheme is evaluated, which indicates that the innovative design approach can be applied to a manual wrench design.


2020 ◽  
Vol 2020 ◽  
pp. 1-25
Author(s):  
Fan Liu ◽  
Xiaomin Ji ◽  
Jing Gao

Aiming at car design, a parametric design method is proposed in this paper. There are two contents in this method, a novel parametric surface, a shape-adjustable automobile styling template, and a design method of integrating the two contents. The surface termed extended SQ-Coons surface constructed in this paper has the advantage of being fine adjusted while always interpolating at the given boundary curves, which is suitable for its application in automobile modeling design. Matching with the surface, a car model template built by multiple quadrilateral surfaces is proposed. The car models built by the template could achieve the parametric adjustability of all modeling features on the premise of maintaining G 1 continuity between subsurfaces. Finally, after the integration of the surface and the template, a whole set of parametric automobile surface modeling design method is proposed. In this method, the overall shape of the car body is determined through multi angle hand drawing, and curve control points, segmentation parameters, and shape parameters are used to adjust the detail modeling. The final results show that the novel surface and template proposed could be used to parametrically establish the vehicle models of various shapes and improve the design efficiency in the conceptual design stage.


2019 ◽  
Vol 11 (12) ◽  
pp. 168781401989380 ◽  
Author(s):  
Yanbiao Li ◽  
Peng Sun ◽  
Huan Qi ◽  
Yiqin Luo

This research aims to explore a better kinematic performance and design scheme for a novel mechanical leg using parameter optimization method. Serial structural mechanisms are widely employed in anthropomorphic mechanism legs but with significant disadvantages of the complex structure and large inertia, particularly, for the multi-objective parameter optimization it is hard to select good parameters to achieve excellent performance. In this article, the plane model of the solution space for multiple parameters and a novel statistics parameter optimization method were proposed for a novel mechanical leg. In the position analysis, the structure and workspace for the novel mechanical leg were developed with simple structure, small inertia, and large workspace; and several kinematic performance evaluation indices were also proposed in the kinematics analysis. In the parameter optimization process, the design scheme and prototyping of the mechanical leg have shown a better kinematic performance by considering the assembly technique as compared with the conventional models. The proposed research provides the basis for the applications of the novel mechanical leg, which can be applied in the modern humanoid robot fields to meet the requirements of high stiffness, lower inertia, and good technological efficiency.


Aerospace ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 54
Author(s):  
Julia A. Cole ◽  
Lauren Rajauski ◽  
Andrew Loughran ◽  
Alexander Karpowicz ◽  
Stefanie Salinger

There is currently interest in the design of small electric vertical take-off and landing aircraft to alleviate ground traffic and congestion in major urban areas. To support progress in this area, a conceptual design method for single-main-rotor and lift-augmented compound electric helicopters has been developed. The design method was used to investigate the feasible design space for electric helicopters based on varying mission profiles and technology assumptions. Within the feasible design space, it was found that a crossover boundary exists as a function of cruise distance and hover time where the most efficient configuration changes from a single-main-rotor helicopter to a lift-augmented compound helicopter. In general, for longer cruise distances and shorter hover times, the lift-augmented compound helicopter is the more efficient configuration. An additional study was conducted to investigate the potential benefits of decoupling the main rotor from the tail rotor. This study showed that decoupling the main rotor and tail rotor has the potential to reduce the total mission energy required in all cases, allowing for increases in mission distances and hover times on the order of 5% for a given battery size.


2021 ◽  
Vol 1 ◽  
pp. 2991-3000
Author(s):  
Frank Koppenhagen ◽  
Tim Blümel ◽  
Tobias Held ◽  
Christoph Wecht ◽  
Paul Davin Kollmer

AbstractCombining agility and convergence in the development of physical products is a major challenge. Rooted in a design thinking approach, Stanford's ME310 process model attempts to resolve the conflicting priorities of these two design principles. To investigate how successful Stanford's hybrid process model is in doing so, we have used a qualitative case study approach. Our paper begins by outlining this process model's fundamental principles in terms of engineering design methodology. Subsequently, we present the results of our empirical analysis, which tracks the coevolution of problem and solution space by meticulously examining all prototype paths in ten of Stanford's ME310 student projects. We have discovered that convergence during solution finding does not correspond to the process model's theoretical specifications. Even in the phase of the final prototype, both the technical concept and the underlying problem formulation changed frequently. Further research should focus on combining the prototype-based ME310 approach with methods from systems engineering which allow for a more comprehensive theoretical exploration of the solution space. This could lead to improved convergence during solution development.


Author(s):  
Jonathan S. Colton ◽  
Mark P. Ouellette

Abstract This paper presents a summary of research into the development and implementation of a domain independent, computer-based model for the conceptual design of complex mechanical systems (Ouellette, 1992). The creation of such a design model includes the integration of four major concepts: (1) The use of a graphical display for visualizing the conceptual design attributes; (2) The proper representation of the complex data and diverse knowledge required to design the system; (3) The integration of quality design methods into the conceptual design; and (4) The modeling of the conceptual design process as a mapping between functions and forms. Using the design of an automobile as a case study, a design environment was created which consisted of a distributed problem solving paradigm and a parametric graphical display. The requirements of the design problem with respect to data representation and design processing were evaluated and a process model was specified. The resulting vehicle design system consists of a tight integration between a blackboard system and a parametric design system. The completed system allows a designer to view graphical representations of the candidate conceptual designs that the blackboard system generates.


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