2results about How to "Same conditions" patented technology

The utility model discloses a kind of sinking flow guide scraping wall type stirring oil drum, it is related to stirring oil drum technical field, including support, motor and barrel body, the bracket side surface installs barrel body fixing frame, the barrel body fixing frame is fixed with barrel body, the bracket bottom installs brake universal wheel, the bracket side surface installs sliding rail, the sliding rail side surface installs sliding frame, the sliding frame side surface installs motor, the motor bottom installs stirring rod, the stirring rod side surface installs stirring shaft, the stirring shaft end installs scraper. Without scraping wall mechanism, suspended solid or colloid in the area close to pool wall can deposit, solidify constantly, form thick silt or scale on wall surface in a long time. The utility model passes through the continuous contact of scraper and barrel wall, scrape all adherend in real time to bottom, make wall surface keep neat, avoid the generation of any stationary layer, guarantee that entire barrel body inside always maintains consistent flow field and mass transfer condition.

This invention discloses a frequency domain synthesis method for sinusoidal superimposed random composite vibration loads, belonging to the field of engineering vibration simulation technology. It solves the technical problem that finite element analysis software cannot directly handle sinusoidal + random time-domain-frequency domain hybrid composite excitations. This method employs a frequency domain substitution superposition strategy. First, it removes the narrowband frequency band corresponding to the sinusoidal sweep signal from the basic random vibration power spectral density (PSD). Then, it replaces the energy of this frequency band with a narrowband spectrum calculated according to the sinusoidal sweep parameters, ultimately synthesizing a continuous total PSD curve with correct energy composition. Simultaneously, through broadband spectrum interpolation generation, narrowband spectrum mathematical modeling, signal substitution superposition, and post-processing steps, it achieves the conversion of the composite vibration spectrum into standardized load data recognizable by the finite element solver. This invention can accurately reproduce the load input of the vibration test bench at the simulation end, establishing a comparable and controllable bridge between experiment and simulation, improving the confidence and predictive value of simulation results, and supporting simulation-driven product design and optimization.