As an effective innovation method, disruptive innovation (DI) can be applied in a new firm to realize leapingover development. Based on the technology evolution theory, the occurrence conditions of DI was put forward. In order to forecast and realize disruptive technologies during the process of product development, the basic laws and principles of DI were summarized and its inherent hypostasis was revealed after further study on technology evolution situation. Aiming at forecasting and searching of disruptive technologies successfully, the technology system of product was decomposed after analyzing of function structure and the balance of subtechnology systems was deeply studied according to the evolutional status of whole technology system. Finally a case study was given in the design process of dropping pill machine to verify the effectiveness of the proposed method．

Product design process is one of the important parts in product lifecycle. The quality of final product and manufacturing cost are usually decided by result of product design process. The essence of product design process is solution of product design problem. It is also a decision making process, the subject on the uncertain condition, in order to fulfil the requirement of customer or subjects. The function is the key factor and content which decides this process. The function is core content. Around it, firstly, the current research on function in product design process was analyzed. The advantages & disadvantages of those pasted research were listed. Then, based on the concept of ontology, and the common between function and ontology, the function definition was proposed oriented to product design process. The relationship among function, requirement and requirement function was presented. Furthermore, comparing with traditional view, a new division of product design process was proposed, in which, the product design process was divided into two phases: the qualitative conceptual design phase and the quantitative detail design phase on the basis of functions mainline in product design product. At last, the outline of this paper was summarized, and the future work of this paper was pointed out．

Considering the repeated refinement situation of design requirements in the early product design, the co-evolution method between design requirement and solution solving was proposed. By using a formal symbolic expression, the method of acquiring design requirements was analyzed. Also the elements and their interrelations involved in the product design process were described rationally. After establishing the corresponding solving model, the logic process of the co-evolution was elaborated, and the layer by layer co-evolution framework based on the proposed method was set up. Finally, taking a papersmoothing machine as a design case study, the co-evolution between design requirement and solution solving was described in detail and the method's practicability was verified.

 To investigate the dynamic characteristics of an explosion-proof tire vehicle, and obtain the dynamic stress and strain distribution, simulation research on its dynamic characteristics was conducted with multi-body dynamics and finite element method. An ADAMS-based model of the vehicle was established and dynamic load curves of all hinge points on the rectangular pit road condition were obtained by multi-body dynamic simulation. Then random excitation peaks of dynamic simulation result were applied to the finite element model established through ANSYS under typical load condition. Both dynamic stress distribution and stress concentration locations of the frame were obtained. The research result can be used to evaluate dynamic stress and strain, also providing certain significance for the vehicle lightweight improved design

Since the physical and chemical characteristics of biogas, some problems such as slow combustion speed, uncompleted burned fuel and high exhaust temperature will occur in its applications in engine. The biogas engine model library was built with the objectoriented language Modelica, the performance of a fourstroke sparkignition gas engine operating with natural gas/liquefied petroleum gasbiogas blends were investigated. Natural gas (33%, 67% and 100%) and liquefied petroleum gas (5%, 10% and 15%) were added to the biogas and were simulated as the fuel of SI engine. The effects of natural gas/liquefied petroleum gasbiogas blends on the performance of sparkignition engine used for electricity production were numerical investigated, the results were validated through the experiments on a gasoline modified gas engine. The results suggest that: There is an improvement in brake thermal efficiency and brake powers with the addition of natural gas/liquefied petroleum gas in biogas. The feature of reusable and objectoriented of Modelica will enhance the modeling and simulation of biogas engine performance greatly not only in accuracy but simulation efficiency, this would be efficient for the design and the optimum work of the biogas fuelled engine．

Dynamic model of the leg prosthesis plays an important role in the research of bionic artificial limb prosthesis.Aiming at the problem of bionic artificial limb prosthesis, the basic structure of the leg prosthesis was designed. The kneeanklefoot model was set up on Pro/E and the nonlinear dynamic model was presented, with the friction question between the joints considered. Finally, the simulation experiment was carried out on ADAMS, which testified the validity of the structure and the dynamic model by computer simulation．

To make research on contact stress between worm and worm gear under different circumstances, and the relationship between the torsion angle of the worm and the driving torque, solid models with precise tooth surface of a ZA worm and worm gear were established based on tooth surface equations. Using these models, finite element analysis of contact was performed with ANSYS at different meshing locations under the same load and at the same meshing location under different loads, and the contact stress distribution on different meshing teeth and the load distribution among them were studied in a meshing cycle. The analysis results show that the contact stress calculated by the theoretical formula is quite smaller than the actual maximum, and that a power function is discovered between the driving torque and the torsion angle of the worm caused by elastic deformation of contact teeth, which can be used in precise angle control of the worm gear．

In order to reduce energy consumption in an ultratall building in the winter and summer seasons, an energy recovery system consisting of an air raise, erected in the center of the building with its both ends open to the ambient, and a turbine installed within the air raise were proposed. A physical model was also developed to predict the performance of the system. Theoretical calculation showed that when the height of building was 1 000 m in winter, while the heat pump absorbed heat from the air raise to the building, the turbine recovered the energy of the downwards moving air in the air raise, and the maximum energy output could be up to 22% of the energy consumed by the heat pump. In summer, while the air conditioning system released heat to the air raise from the building, the turbine recovered the energy of the upwards moving air in the air raise and the maximum energy output can be more than 50% of energy consumed by the air conditioning system. The results of calculation show that using this system to reduce energy consumption in ultratall building is feasibility．

In hoping to overcome the shortcomings of the unintuitive and inefficient defects in traditional two dimension approach, this paper proposed a three dimension design method for open pit mine. Firstly, it created a deposit geological model with three-dimensional mine software, assigned the grade by using geo-statistical method, and then obtained geological grade model. On this basis, using 3D finite element method, the study on optimizing the slope angle of mining limit and combining parameters of slope bench was performed. And in the virtue of limit definition and 3D schedule procedure, the integral optimization of the whole system in the aspects of deposit schedule, production scope, mining limit and limit grade was achieved. Finally, according to the optimization result, the development system was arranged properly, and three dimensions design of the full flow was realized. Through applying the approach in one mining design, the result shows that three-dimensional visualization method has the advantages of high efficiency, precise calculation, and strong application value.

In order to demonstrate the feasibility of a repair method of
bearing seat on a certain airplane starter and the rationality of the parameters adopted
in repairbushing interference fit structural, the reliability of repair-bushing
interference fit has been studied. With the factors, which will induce repair-bushing
looseness or bearing seat flaw, set as random variables, the reliability model has been
established. The finite element calculation of repairbushing interference fit has been
accomplished base on ANSYS, and the finite element calculation results have been examined
by experiment. According to the reliability model of repairbushing interference fit and
the results of finite element calculation, the reliability of repair-bushing interference
fit was calculated. The calculation results and the practical applications show that the
design of repair-bushing interference fit structural parameters is reasonable, and the
repair method which is feasible and effective has a high reliability.

Due to the heterogeneity of network and firewall, IDS
monitoring, network scanning often encounter unexpected obstacles. In order to have the
situation of network security well in hand, we need to research the convert network
scanning techniques. This paper designed a covert network scanning system which used lots
of popular network scanning technologies and made scanning even more secret by optimizing
the scanning ports, slowing down the scanning and forging data packets. This thesis
presented an improvement of the IPID scanning technique which named random chunk binary
algorithm and improved the efficiency of the ordinary．

How to train the actual capabilities of everyone who receives an
education in university, to transform the intellectual resources of higher education and
research organizations into the productivity and to improve the innovation quality of
enterprises, which are the pressing questions in China. The knowledge demand of product
development in feature should be quested in academic circles of China. It was described
that how cooperation between colleges and industries in Germany took place. It was also
introduced the characteristics of research on knowledge innovation and product
development, which helped us to pierce the development trend of product in the future.
Simultaneously, the organizational features of teaching and research groups as well as
project research teams formed within universities of Germany were discussed. Some measures
could improved the innovation awareness of the public and were worth referencing and
learning to our research institutes and universities so as to maximize the capabilities of
technology innovations of academic institutes seamlessly with industries' participation．

he enormous vibration of steel-rope in the carrying tramways
will bring about falling cabin or steel-rope, and affect the comfort of the passengers in
the passenger tramways. Research has been carried out on the vibration of steel-rope of
carrying tramways. By established physical models, analysis showed that vibration was
rapidly increasing when the frequency of heavy cabin in the steel-rope and natural
frequency of a vibration mode were very close. It meant that the resonance phenomenon
occurred. The model and analysis were proved to be correct.And some effective methods were
proposed to reduce vibration. They are helpful to solve the vibration of carrying tramway
and passenger tramway.

Novel balanced composite right/left handed transmission line
(CRLH TL) with electrically small dimension of 0.074λ_g based on Minkowski fractal
shaped geometry of complementary split ring resonator (CSRRs) was proposed and studied.
Effects of the ring number of CSRRs, iteration order, horizontal and vertical iteration
factor to transmission characteristics of unbalanced CRLH TL were investigated through
academic calculation, constitutive parameters extraction approach, and EM as well as
electrical simulation. Thus working mechanism of fractal and multi-loop structure in
terms of miniaturization can be derived. For verification, novel balanced CRLH TL has been
fabricated and measured. Results obtained from simulation, circuit model and measurement
show good agreement which indicates: the -10 dB return loss bandwidth has been
significantly broadened (relative bandwidth of 113.7%) while also presents a lower
operating frequency. Good performance of the proposed structure exhibits promising
foreground in ultra wide band and miniaturization application．