The mat of thick spaceboard structural panels is compacted by pressing plate,producing inner force layer in mat.

27 dyn/cm2 laminar shear stress respectively.

Based on the theoretic model, formation stress may be derived from constraint inversion method with use of imaging data of borehole collapse and hydaulic fractures, in such away that not only the maximum horizontal stress profile but also the minimum one can be obtained, and further the formation breaking pressure, which is helpful to borehole stability analysis and fracturing design.

Calculated are the rock and formation stress parameter with mechanics law; built is the mechanics model of calculation of capillary pressure under the condition of formation stress, so, we can get more reliable information about the formation.

Through analyzing frecuring data of many wells in the Ordovician formation in central Tarim basin,it is found that formation stress information in pressure-time curves obtained from the fracturing data may reflect the true formation stress.

Study on surface layer stress of small-diameter wood during drying process;

Numeric analyses for interlaminar stresses of the free corner effect in laminates;

The interlaminar stresses and experiment research of viscoelastic laminated plates for damping vibration;

Damping vibration and interlaminar stresses of submarine pressure hull with anechoic tile in fluid;