Existing successful design cases are applied in design process which adopts analogybased design (ABD) and theory of inventive problem solving (TRIZ)to make the two processes have some level of similarity. On the basis of analyzing the principles of ABD and TRIZ, the idea, taking TRIZ solution model and corresponding design example as the source design of ABD and then determining object design and creative design through analogybased design process, is proposed.Improving design of a paper machine demonstrates this method’s feasibility. 

Aiming at FMD optimal configuration problem, axiomatic design theory is utilized to delaminate and decompose FMS optimization objects. Original complicated configurations are decomposed into several simple configurations and strategies composed of modules. Coupling relations between decision-making variables are released and FMS optimal configuration frame based on axiomatic design is set up, which is a foundation for seeking optimal solution and developing prototype system. 

To solve the problem of function-structure mapping, Function SurfaceModel is put forward. As information carrier of function-structure mapping, Function Surface is divided into Locating Surface and Located Surface. Furthermore, function transmission chain based on Function Surface is proposed. After systematic comparison between biological unit and mechanical product, a methodology of conceptual structure Growth Design is provided. In accordance with the principles of generalized locating and decomposition and reconstruction theory, Function Modes including Executing Mode, Transmitting Mode and Locating Mode are set up. And then design process model of Growth Design based on the above Function Modesis obtained. Finally, a clamping tool is taken as an example to illustrate the model.   

Representation of disassembly sequence is the basis of evaluating andoptimizing it and AND-OR graph, a typical method for representing sequences, has redundancy in representing information of disassembly. Through equivalent transformation of AND-OR graph, such redundancy is eliminated. Furthermore, generating algorithm of optimized representing model for disassembly sequence is designed and such model based on OBDD is established to represent disassembly sequence of complex assembly. Final experiment shows that memory space of optimized representation model based on OBDD is much less than that of AND-OR graph. 

There are complex dependencies among product assemblies and parts, a local change exerted on the product may bring a long delay to the whole product design cycle, so it is important to evaluate the design change-resolving time to adopt the right product development strategy. This paper is based on the modeling of product parameterization design process, in which a design task dependency degree concept and the corresponding computation method are proposed. Change-resolving time for five task dependency patterns such as interaction, serial, cycle etc are analyzed, a gear reducer parameterization design is finally taken to demonstrate the change-resolving time evaluation method.

Through analysis of kinematics model of soccer robot, considering time-lag, nonlinear and other characteristics of this system, control method combining fuzzy control with traditional PID control is put forward. By applying this control method into soccer robot, PID control guarantees its accuracy and fuzzy control realizes rapid control. Design process of fuzzy control system on soccerrobot is introduced with details and its algorithm is validated by simulation and soccer robot platform based on visualization. The results indicate that this method is feasible.

A new type of cam with simple but practical structure was proposed and structure and function of this cam’s different parts were expatiated. Selection references for polysurface continuity grade between different parts were put forward. Then, primary test of this cam is introduced. This new type cam structure can implement continuous Variable Valve Timing and continuous Variable-Lift simultaneity, which adapt to the developing tendency of VVT. 

A brand-new jib-bridge luffing system of crane is brought out based o analysis of the limitation to handle containers of the portal crane. The system is provided with novel structure and advantages, such as more rapid velocity, bigger tasking area, higher working efficiency, less weight, lower cost, and so on. The design methods are expounded of equalizing horizontal and balancing deadweight for the jib-bridge system. The optimizing design for the equalizing system ensured cargo to move horizontally in luffing process, the design method of balancing system achieved ideally effect.

The dynamic simulation crack models of cracked beam are introduced. And advantages of each model are analyzed. By adopting lumped flexibility model, simulation analysis of the changing characteristics of modal parameters with thecrack changing is carried out and the simulation result accords with the experimental result well. Simulation data qualitatively reflects the changing trends of natural frequency and modal shape with the crack parameters changing. Generally, it is regarded that crack located on the modal shape nodes has no effect on model parameters. However, simulation result indicates that this conclusion is not absolute. Moreover, sensitivity of beams with different geometry parameters tocrack is discussed.

In order to effectively decrease the alternative stress amplitude of stirrer head, numerical simulation of the intensified effect of one stirrer under different intensified methods is put forward. Effect of stress distribution onstirrer head and decreasing results of maximal stress of the three intensified methods, namely increasing thickness of nozzle, adding the number of stiffened plate and enhancing the height of stiffened plate, are studied, and then the mosteffective structure of stiffened plate is presented. The results indicates, that among the three intensified methods, increasing the thickness of nozzle has noobvious effect on decreasing stress, while enhancing height of stiffened plate performs very well in this aspect, which can act as a reference for design of this structure. 

Automobile gearbox assembling line system is a typical dynamic discrete system and it is difficult to guarantee layout reasonability and runningreliability of this system with traditional experience design. Taking a given automobile gearbox assembling line as an example, design and management of this system are implemented through visual simulation. The methods of queue-service net and event scheduling are utilized to model the assembling line and simulate its running process. Finally, through simulation system experiment, the optimal number of AGV and reasonable scheduling rule are obtained. 

Assembled flywheel system is a key component of electromagnetic eddy currency retarder test-bed, which is used for simulating inertia of vehicles. According to energy conservation theory, expression of vehicle mass is presented and the relationship between moment of inertia corresponding to the simulated vehicle mass and vehicle parameters is established. A new type of assembled flywheel system with novel structure is designed. Under the prerequisite of consideringpractical application, a set of feasible optimization and combination schemes of assembled flywheel system’s moment of inertia are put forward. By applying finite-element modal analysis method, after modal analysis of combined and optimized flywheel system, natural frequency and vibration-mode are achieved, which provides references for avoiding resonance during test bed’s running. 

Displacement and stroke-bore ratio are two basic parameters in designing an Air-powered Engine (APE). To analyze the effects of them on the performance of APE, the model of APE was built up based on the thermodynamic analysis. And a prototype APE converted from a single\|cylinder four-stroke gasoline engine was tested for checking the accuracy of the model. Good agreement of computation results is obtained between the results calculated from the model and the experiment data of the prototype engine. Based on the model, simulation was carried out with different combinations of displacements and strok-|bore ratios to study the influence of them on the engine performance. Results of simulation indicate that large displacement can raise the mean torque almost proportionally and boost the efficiency of APE while large stroke-bore ratio is of some benefit to increase the efficiency but has less effect on the torque. Itcan be adopted as the rule in APE design that displacement and stroke-bore ratio should be set as large as they can be to obtain a nice performance after weight and structure of the engine are considered comprehensively.

Flow resistance when crude oil flows through screen liner is a key factor for designing new slotted screen liner with compound cavity. Through accurate computation of such resistance, a large number of relation data between screen liner parameters and flow resistance are obtained. By applying BP neural network, forecast model of flow resistance is built up. Based on this model, Genetic Algorithm is utilized to comprehensively optimize parameters of screen liner. Experiment data shows that this model can fulfill the engineering requirements. Field application indicates that screen liner, designed by this model, has small flow resistance, high intension, long longevity and wide market prospect.

Oil-trap results from the work principle of gear pump, and it directly influences the performance and lifespan of gear pump. Reducing pressure in trapping area is of great importance to enhance performance of gear pump. Therefore, how to measure pressure in trapping area is a problem confronting researchers.Design of experimental system is carried out, and experiments are conducted. The results indicate that this system can meet requirements well.

Settlement deformation often happens on large steel tanks constructedon soft groundwork, in which the influence of uneven settlement around tank wall is the most detrimental for tank structure. By analyzing the finite element parameters of floating-roof tapered tanks under harmonic settlement, the effects of the major geometric parameters of tapered tank (including wall variable parameters, wind girder stiffness, radius-to-thickness ratio and height-to-radius ratio) on tank structure deformation and stress are discussed. Finally, compare of structure behavior of tapered tank and uniform tanks under harmonic settlement is also carried out.

Large net-shape deployable antennas composed by mesh reflector membrane surface and deployable truss structure are an effective tool for satellite communication. Design methods for a large deployable reflector structure were introduced systemically and some measures to prevent winding wereproposed. According to these methods, two prototype models with different net types were successfully designed and manufactured and prime experiments were carried out on them. These methods provided important references for design of similar deployable net-shape antennas.

By utilizing the open characteristic of AutoCAD2000 and the powerful function of ObjectARX2000 provided by Co. AutoDesk, taking MS VC++ 6.0 as developing tool, a 3D casting CAD system was developed combining with Graphic Databaseof AutoCAD 2000. Data in the design process would be saved in database automatically. This system could exploit those medium data to automatically but rapidly export process charts and process cards.