Torsion rigidity, maximum torque, maximum torsion angle, compression rigidity, compression strength of 2mm displacement, maximum compression strength and rotational angle of distal fragment was recorded.

Compression strength at 2 mm displacement in CPC group (average 375 N) and combination group (average 386 N) exceeded that in Kirschner group (average 116 N), with significantly statistical difference (P<0.01). Maximum compression strength in CPC group (average 871 N) and combination group (average 943 N) was higher than that in Kirschner group (average 395 N), with significantly statistical difference (P<0.01).

According to the definition of the information fusion entropy, two theorems on the efficiency of information fusion and on maximum compression of fusion entropy are presented and testified.

Methods A total of 18 human distal radius fracture models were made and randomly divided into three groups: fixed with Kirschner wire (Kirschner group), CPC (CPC group) or CPC combined with Kirschner wire (combination group). Compression test was performed to measure compression rigidity and rotational angle of distal fragment at 100 N and anticompression strength and maximum compression strength at 2 mm displacement.

Based on the stress relaxation model in 1D planar geometry and the visco-elastic constitutive equation, the temperature and stress histories in the K9 glass samples irradiated by CW laser beams (=1. 06μm) have been calculated. The results indicate that the residual tensile stress due to the stress relaxation effect during cooling after the laser radiation may be greater than the tensile fracture strength of samples, while the maximum compression stress during the laser heating .

Conclusion: Based on the above results the following atmospheric pressure limits have been put forward: the appropriate compression rate is 3 04 kPa/s and the maximum compression rate is 4 05 kPa/s.

Results: Compared with control group,the setting time was significantly prolonged when 2% EPI was incorporated into CPC(P<0.05),and the maximum compression strength was significantly decreased when 5% OH-CPT and 8% MTX,EPI were incorporated into CPC(P<0.05).

RESULT: In group A, the maximum bending, maximum torque, maximum compression and extraction was an average of 57.63±8.14Mpa,1.68±0.19N. m, 115.25±31.99MPa and 72.00±22MPa;

In the transitional regime (at effective pressures between 45 MPa and 130 MPa), compacting shear bands at high angles and compaction bands perpendicular to the maximum compression direction were observed.

From an impression of the fracture at 240.2 m, the direction of maximum compression appears to be about N 15° E.

The apparent direction of maximum compression is N 70° E (±40°).

Ultrasonic compressional and shear travel times have been measured simultaneously along the direction of maximum compression for granodiorite loaded in uniaxial stress.

For the positions of the maximum compression and the maximum tension, after they shift to the left-hand side from the origin (X* = 0.0, θ = 0°), they shift to the right-hand side till θ = 90° passing the origin at 45°.

The expression of shock velocity D in terms of a power series of particle velocity u is derived from the comr ation of the Taylor expansion of shock adiabat PH = PH(V) with the Rankine-Hugoniot conservation relation.An iterative method is used Although it is derived by different means,the result obtained is the same as that of Pastine and Placesi's and that of Ruoff's :.but the deriving process in this paper is much simpler than theirs.An estimate formula for calculating the applicable range of D(u) linearized...

The expression of shock velocity D in terms of a power series of particle velocity u is derived from the comr ation of the Taylor expansion of shock adiabat PH = PH(V) with the Rankine-Hugoniot conservation relation.An iterative method is used Although it is derived by different means,the result obtained is the same as that of Pastine and Placesi's and that of Ruoff's :.but the deriving process in this paper is much simpler than theirs.An estimate formula for calculating the applicable range of D(u) linearized expression is also given.For common condensed matter,the maximum compression ratio (p2/p1) which fits the linearized expression is about 1.5.

The service life of ingot molds are closely related to the thermal stress in production. The thermal stress of 4.5t ingot mold of vermicular graphite cast iron was measured directly in steel works.This paper describes the measurement and results. The results show that the maximum tensile stress of 20.61kgf/mm~2 at 350℃ occurs at the bottom of the ingot mold. The bottom of the ingot mold is an important place for vertical crack to be initiated in the ingot molds. The cross crack always appears in the centre of...

The service life of ingot molds are closely related to the thermal stress in production. The thermal stress of 4.5t ingot mold of vermicular graphite cast iron was measured directly in steel works.This paper describes the measurement and results. The results show that the maximum tensile stress of 20.61kgf/mm~2 at 350℃ occurs at the bottom of the ingot mold. The bottom of the ingot mold is an important place for vertical crack to be initiated in the ingot molds. The cross crack always appears in the centre of the ingot mold, where the maximum tensile stress is 8.58kgf/mm~2 and the maximum compression stress is 18.72kgf/mm~2, and generally emerges during its later service. All those parameters can be used as a reference for desingers, producers and users of ingot mold.

In this paper, the dynamical response of shallow-buried box structures by using three different analytical models is analysed and compared on the basis of one - dimensional plane wave theory. These models are the shallow-buried beam model, the rigid structure model and the flexible structure model. Studies show that the interaction coefficient, characterizing the ratio of the dynamical deflection of the roof plate of the structure under compression wave to its static deflection under the maximum compression...

In this paper, the dynamical response of shallow-buried box structures by using three different analytical models is analysed and compared on the basis of one - dimensional plane wave theory. These models are the shallow-buried beam model, the rigid structure model and the flexible structure model. Studies show that the interaction coefficient, characterizing the ratio of the dynamical deflection of the roof plate of the structure under compression wave to its static deflection under the maximum compression in the free field, varies with several non-dimensional parameters. This paper gives the principles governing the choice of rigid or flexible model adopted for the response analysis of shallow-buried structures commonly used in china.