Combined with some slope on the Yangtse River, the weak part and latent slide wedge are determined in different stage by non linear finite element analysis and disturbing energy method,thus the unstabilization process of slope is simulated.

Directed against a certain high reliability product, the stress response law of the thin and weak part was obtained by means of random vibration test. It is indicated through reliability evaluation that it is available to carry out the reliability test by choosing only 4~5 components if the spectral density of inputting power has been increased to about 108%.

Analysis shows that the defect of pipe support and hanger hasn’t direct relationship with the bendcracking, but the defect of pipe support and hanger makes the stress of weak part in the original design to exceed the allowable value, causing the fatigue life of said part to decrease to some extent, hence, supervisory for the said part has to be strengthened.

Changes in the scope of the cushion directly influence stresses and deformation in the its skirt ，specially more obvious in the changing part，so these can explain stresses sensitive to the scope of cushion in the weak part of the concrete.

Through studying the weak part of 600t mixer furnace in the Third Steel-making Plant of Lianyuan,this paper introduces the technology of changing the exit of mixer furnace building of Al2O3-SiC-C brick into building of Al2O3-SiC brick. And it also introduces some measures to strengthen furnace maintenance and operating management to improve the service life of mixer furnace.

Teacher's classroom management behavior is a basic fator that affects teaching qualities and efficiency, and is a comparatively weak part in the present studies of teaching.

In case that the potential energy function can be split into a strong and a weak part, we also show how to combine an energy conserving discretization of the strong forces with a symplectic discretization of the weak contributions.

Here, we present the weak part and the virtual one-loop photonic corrections.

A remarkable feature of the e.m.-dominated process is also the very small value of the asymmetry in the photon helicity, while the weak part would imply an effect of about 20%.

After detection of the mechanism of the present arrhythmia, the weak part of the reentrant circuit has to be identified using different mapping techniques.

The actuator does not include any weak part such as flexural hinges.

Incorrectness in the structure of mine car tippler frames have existed for a long time.Failures often occur as a result of overstress in certain weak parts,while most other members are too heavy. In this article a mechanical model of tipplers is introduced.The tippler can be considered as a space frame amenable to matrix analysis.The author has solved this problem on a TQ-16 computer and found the maximum stresses of structure parts. Drawbacks in the conventional structural design and calculations of tipplers...

Incorrectness in the structure of mine car tippler frames have existed for a long time.Failures often occur as a result of overstress in certain weak parts,while most other members are too heavy. In this article a mechanical model of tipplers is introduced.The tippler can be considered as a space frame amenable to matrix analysis.The author has solved this problem on a TQ-16 computer and found the maximum stresses of structure parts. Drawbacks in the conventional structural design and calculations of tipplers are pointed out.The weak part of existing tipplers,the cause of their failures and ori- gin of excessive metal use have been examined.

In this paper, the author is attempting to solve the thermalengineering problems by the exergetic method as follows:1. First of all, four more definite and clearer definitions of exergetic efficiency are presented. Then, separate definitions of reasonable exergetic efficiency are also given for the different kinds of thermalengineering equipments for different uses.2. Emphasis is placed on the analysis of exergy of steady flow process with perfect gas as the working substance. From such an analysis, it is shown...

In this paper, the author is attempting to solve the thermalengineering problems by the exergetic method as follows:1. First of all, four more definite and clearer definitions of exergetic efficiency are presented. Then, separate definitions of reasonable exergetic efficiency are also given for the different kinds of thermalengineering equipments for different uses.2. Emphasis is placed on the analysis of exergy of steady flow process with perfect gas as the working substance. From such an analysis, it is shown that the exergy of a steady flow process of perfect gas can be divided into two different kinds of capabilities of work exclusive of the constant - zero exergy e0, which characterizes difference of mass transported between the steady flow and the surrounding medium. Now that the steady flow process in a fluid machine with perfect gas as the working substance can be described by stagnation enthalpy exergy ei* and stagnation pressure exergy ep* instead of stagnation enthalpy i* and stagnation pressure p*. And that two different kinds of capability of work can be distinguished and eventually a further development of exergetic analysis can be brought about.3. The objective function of the malengineering equipment is so depicted by the exergetic efficiency as to examine whether more reasonable result can be made otherwise with the traditional approach of analysis through its objective function-thermal efficiency. According to the author, that will depend on the coherence of variation of exergetic efficiency against the parameter analysed with that of thermal efficiency. As the coherence does not appear, the more reasonable result can be obtained. Otherwise, that will never be obtained.4. Referring to the exergetic analysis of weak part where improvement must best be made, it carried out by use of an example, it is shown that the weak part can only be determined correctly in virtue of the following approaches:(1) By comparing the magnitudes of exergy losses for various parts in a given equipment.(2) By comparing the magnitudes of exergy losses at the same part of different kinds, of thermalengineering equipments.(3) By rigorously distinguishing two different kinds of exergy losses i.e. stagnation enthalpy exergy losses and stagnation pressure exergy losses.

In this paper a surface grinding machine with horizontal axis and rectangular table is analyzed by the analytical method of structural dynamics. The machine is represented by a lumped-parameter model of the vibratory system with 11 degrees of freedom. The amplitude-frequency characteristic plotted from calculating results approaches to that of exciting tests. Basing on the computations of modal flexibility and energy distribution, the dynamical weakest part of this machine------Wheel head system is found....

In this paper a surface grinding machine with horizontal axis and rectangular table is analyzed by the analytical method of structural dynamics. The machine is represented by a lumped-parameter model of the vibratory system with 11 degrees of freedom. The amplitude-frequency characteristic plotted from calculating results approaches to that of exciting tests. Basing on the computations of modal flexibility and energy distribution, the dynamical weakest part of this machine------Wheel head system is found. This conclusion agrees with that from exciting tests.