Abstract: A laterally deployable photovoltaic device and a solar vehicle are provided. The photovoltaic device includes at least one movable plate on which a solar cell module is arranged, a rotation drive apparatus which fixedly connects the movable plate to a vehicle body and a flipping apparatus. The rotation drive apparatus includes a fixed end and a drive end, and is secured to the vehicle body via the fixed end, the drive end of the rotation drive apparatus is fixedly connected to the movable plate, and the movable plate is driven by the rotation drive apparatus to rotate to a side of the vehicle body. A fixed end of the flipping apparatus is fixedly connected to the vehicle body, and a flipping adjusting end of the flipping apparatus is fixedly connected to the movable plate, for adjusting an angle of the movable plate relative to the vehicle body.

Abstract: The present disclosure relates to a method and device for acquiring working condition performance parameters of an engine hood. The method includes: acquiring a microstructure diagram of a composite material; acquiring a mechanical property constant value of the composite material according to the microstructure diagram; and acquiring the working condition performance parameters of the engine hood according to the mechanical property constant value of the composite material and a finite element model of the engine hood, the material of the engine hood including the composite material. The microstructure diagram of the composite material can be closer to that of a real material, thus ensuring that the mechanical property of the composite material acquired according to the microstructure diagram is closer to a real situation, i.e., macroscopic mechanical property parameters closer to those of the real material can be acquired.

Abstract: The present disclosure relates to a method and a device for predicting fiber orientation. The method includes: obtaining a mechanical property parameter value of a fiber composite material; obtaining a change value of a fiber property of the fiber composite material after deformation of the fiber composite material, according to the mechanical property parameter value; and predicting fiber orientation in a forming process of the fiber composite material according to the change value of the fiber property and a preset fiber orientation model, the preset fiber orientation model indicating a mapping relationship between the change value of the fiber property and the fiber orientation after the deformation of the fiber composite material.