A heat supply network hydraulic circuit modeling method for a comprehensive energy system scheduling is provided. The hydraulic analysis model is unified with the power network model, and the connection between the hydraulic dynamic state and the hydraulic steady state is established. Based on the characteristic equations of thermal pipelines, flow control valves and compressors, this method abstracts hydraulic circuit element models such as hydraulic resistance, hydraulic inductance, and hydraulic pressure source, establishes hydraulic branch characteristics of the heat supply network based on the above hydraulic circuit elements, establishes the hydraulic topology constraints of the heat supply network based on Kirchhoff-like voltage and current laws, and establishes the steady hydraulic network equation by combining the above hydraulic branch characteristics and hydraulic topology constraints.

Disclosure is a loudspeaker frame, comprising a frame body, and a fastener for mounting the frame body in an application scenario. The fastener comprises a connecting column having a proximal end being directly or indirectly connected to the frame body and a distal end; and fins arranged in pairs and respectively located on two sides of the connecting column, wherein each of the fins has a proximal end and a distal end. The distal end of each of the fins is connected to the distal end of the connecting column, a gap is formed between the proximal end of each of the fins and the connecting column, and each of the fins has elasticity so as to allow the fin to draw close to the connecting column after being pressed.

The present disclosure relates to an information processing device, an information processing method, and a program for enabling more accurate prediction of a crack to be made. A model acquisition unit acquires a structure model M.sub.D from a model generation unit, an external device (not illustrated), or the like. Amplitude load energy A in an element E0 having no cracks is set on the basis of a relationship between an equivalent stress σ and an equivalent elastic strain ε experimentally obtained according to a material constituting the element E0. Since the equivalent elastic strain ε depends on a crack variable φ, the amplitude load energy A is expressed as a function of the crack variable φ. A crack prediction unit predicts a crack to be generated in a structure D by calculating a differential equation having a term proportional to the amplitude energy. The present disclosure can be applied to, for example, a crack prediction device that predicts a crack.

A method for forming a multi-material mechanical functional member in additive manufacturing. The method includes the following steps: S1: dividing an object to be formed into a plurality of portions, analyzing and measuring mechanical properties of each portion, and constructing a unit cell library; S2: forming a lattice structure by using a unit cell structure in the unit cell library to obtain the lattice structure corresponding to each portion; S3: selecting a raw material of the lattice structure, measuring and comparing mechanical properties of each lattice structure with the mechanical properties of each portion of the object to be formed, where when the mechanical properties of each portion are satisfied, the lattice structure is the required lattice structure, otherwise, step S2 is repeated; and S4: forming a three-dimensional model by a method of additive manufacturing to accordingly obtain the required object to be formed.

Method and electronic circuit for determining a scaling factor k for a driving force function of a model of an electrodynamic acoustic transducer having at least two voice coils. Input signal fed into the transducer and it's model cause electromotive forces. A shift for the driving force function is determined on the base of the ratios between the real electromotive forces and the modeled electromotive forces. Finally, the scaling factor k is determined on the basis of a deviation between the real electromotive forces and the modeled electromotive forces at time points where the real electromotive forces and the modeled electromotive forces each are equal. The invention moreover relates to an electronic circuit for performing the above steps, and to a transducer system with the electronic circuit and a connected transducer.

The present invention discloses a numerical simulation method for proppant transport considering wall-retardation effect, comprising the followings: establish a physical model of laboratory experiment on proppant transport with a large flat-panel device; establish a drag coefficient model considering wall-retardation effect according to the numerical simulation experiment; establish a computational geometric model; set boundary conditions and physical parameters of the geometric model according to the two-fluid simulation method for solid proppant quasi-fluidization; verify the grid independence of the computational geometric model to obtain the transport characteristics and placement pattern of the proppant in fractures. The present invention employs a numerical simulation method to study the migration and distribution patterns of proppant under the retardation effect of narrow walls during the hydraulic fracturing. The method is reliable in principle and can accurately predict proppant transport in subsurface hydraulic fractures with consideration of the wall-retardation effect on proppant transport.

According to an embodiment, a processing method simulates conveyance of at least one web sheet conveyed in a conveying direction along a conveyance path from an unwinder to a winder. The processing method sets a conveyance velocity along the conveying direction as a velocity of a distal end node, which is an analysis node located at a distal end of the web sheet in the conveying direction. After setting the conveyance velocity to the distal end node, the distal end node is deleted based on a movement of the distal end node by a prescribed distance. The processing method updates the distal end node to an analysis node newly located at a distal end of the web sheet based on the deletion of the distal end node.

A stress generated in each of a plurality of components is calculated during simulation using a machine including these components. A simulation device includes a storage that stores assembly data of a machine including a plurality of components and a program for control of a driver connected to machine, and a controller configured to execute a simulation of machine. The controller causes driver to operate in the simulation and calculates a stress generated in each of the plurality of components in the simulation in response to driver being driven.

The present invention belongs to the technical field of tunnel surrounding rock supports and discloses a tunnel surrounding rock supporting method and system based on a tunnel field deconstruction and reconstruction theory. The tunnel surrounding rock supporting method based on the tunnel field deconstruction and reconstruction theory comprises the following steps: establishment of a tunnel field, deconstruction of the tunnel field and reconstruction of the tunnel field. In the tunnel surrounding rock supporting method based on the tunnel field deconstruction and reconstruction theory provided by the invention, through reconstruction of the tunnel field, the energy storage capacity of a rock and soil mass can be improved.

The present invention relates to a method for calculating a time history wind load in accordance with correlation, the method in which an artificial time history load close to reality can be generated without relying on a wind tunnel test, by applying the correlation between wind loads in two directions and adjusting the ratio of a maximum value of any one wind load relative to a maximum value of the other wind load.