40results about How to "Improve local stress" patented technology

A system and methods for weak spot analysis. A mesh shape is preprocessed to approximate an input model for an object. The mesh shape is analyzed with modal analysis to identify weak regions. A method and system for determining weak spots in an object. The method and system uses an optimization problem which is solved to determine a pressure distribution on the object maximizing maximal principal stress by solving a set of optimization problems maximizing stress for each point of the object.

A turbine bucket airfoil has a conical fillet about the intersection of the airfoil tip and tip shroud having a nominal profile in accordance with coordinate values of X and Y, offset 1, offset 2 and Rho set forth in Table I. The shape parameters of offset 1, offset 2 and Rho define the configuration of the fillet at the specified X and Y locations about the fillet to provide a fillet configuration accommodating high localized stresses. The fillet shape may be parabolic, elliptical or hyperbolic as a function of the value of the shape parameter ratio of $\frac{\mathrm{D1}}{\mathrm{D1}+\mathrm{D2}}$

at each X, Y location where D1 is a distance between an intermediate point along a chord between edge points determined by offsets O2 and O2 and a shoulder point on the fillet surface and D2 is a distance between the shoulder point and an apex location at the intersection of the airfoil tip and tip shroud.

A structure for extreme thermal cycling has a support element that supports a vessel primarily by bearing and frictional forces rather than by welds. The support element has a bearing portion that tapers inwardly beneath a knuckle that separates a cylindrical section of the vessel from a sloped lower section. The bearing portion of the support element follows that slope, providing an extended area of contact between the support element and the vessel. An annular section of the support element can be heated and expanded before placing it around the cylindrical section of the vessel to provide pre-stressing. If required, a strap may extend downwardly from the vessel over an upper edge of the support element.

The present disclosure relates to a battery structure for an electric vehicle. The battery structure comprises a battery case for at least one battery module and a protector including a top belt, a bottom belt and a core arranged between and interconnecting the top belt and the bottom belt. The top belt has a wavelike cross section.

The present invention provides a rocker valve comprising a valve body including first and second fluid ports and a rocker valve mechanism in the valve body. The mechanism comprises a single pivot arm rotatable relative to the valve body, and first and second plungers pivotally fixed to the single pivot arm. The second plunger acts in opposition to the first plunger when the single pivot arm is pivoted relative to the valve body. The rocker valve includes a flexible seal member extending laterally across the first and second fluid ports. The flexible seal member has a first sealing region attached to the first plunger and a second sealing region attached to the second plunger and is movable by the first and second plungers between a first position in which the first fluid ports is closed by the first sealing region, and a second position in which the second fluid port is closed by the second sealing region. When the single pivot arm is pivoted relative to the valve body, a rotation of at least one of the first and second plungers about its respective fixed pivot is constrained solely by the flexible seal member.

The invention discloses a ball head assembly and a vehicle provided with the same. The ball head assembly comprises a connecting piece, a tapered seat, and a ball head. The adapting piece is providedwith an inner tapered hole; the tapered seat penetrates through the inner tapered hole, and the tapered seat is provided with an outer tapered surface matched with the inner tapered hole; and the ballhead penetrates through the tapered seat and is fastened on the connecting piece through a fastener. According to the ball head assembly, the tapered seat and the connecting piece are connected through a tapered surface, the partial stress condition is greatly improved, stress concentration is lowered, thus connecting part breaking is avoided, and using safety of the ball head assembly is improved advantageously.

The invention discloses an anchor rod and anchor cable protecting mechanism for a roadway support hydraulic bracket. The anchor rod and anchor cable protecting mechanism comprises a fixing beam installed on a hydraulic bracket top beam. The fixing beam is provided with a sliding beam driven by a hydraulic cylinder, and the sliding beam is slidably connected with the fixing beam through a guide rail. The upper surface of the sliding beam is provided with at least two convex structures contacting with a roadway top plate. An avoidance groove matched with an anchor rod or an anchor cable is formed between the neighboring convex structures. The anchor rod and anchor cable protecting mechanism is simple in structure, convenient to operate, and capable of adequately preventing the top beam of the roadway support hydraulic bracket from directly contacting with the anchor rod or the anchor cable so as to generate a higher local stress, meeting a requirement of improving support quality, and meeting a demand of rapidly moving the bracket, and has very strong applicability.

A superconducting magnet assembly may include a main magnet assembly having at least one annular coil arranged about an axis, and at least one shield coil, of greater diameter than the main magnet assembly, arranged about the axis. At least one support may be provided, attached to the shield coil and to the main magnet assembly.

The invention discloses a connecting device for box-shaped section steel tube components. The connecting device comprises an upper box-shaped section steel tube component section and a lower box-shaped section steel tube component section. The upper box-shaped section steel tube component section and the lower box-shaped section steel tube component section are connected through connecting inner cores arranged in the upper box-shaped section steel tube component section and the lower box-shaped section steel tube component section. The upper box-shaped section steel tube component section and the lower box-shaped section steel tube component section are fixed to the connecting inner cores through bolts. Welding can be avoided during field splicing of the box-shaped section steel tube components with small sections, the bolt connecting operation is simple and convenient, and the connecting requirements of anti-knock steel structure frame beams and columns can be met.

The invention discloses an arch bridge boom structure which comprises bridge piers, horizontal beams, longitudinal beams, a bridge floor and arch ribs which are sequentially arranged from bottom to top, wherein the horizontal beams and the longitudinal beams are mutually in lap joint and fixed to the bridge piers, the bridge floor is arranged at the tops of the horizontal beams, the arch ribs arearranged on the two sides of the bridge floor, the top ends of the arch ribs on the two sides of the bridge floor are fixedly connected through steel supports, booms are evenly distributed among the arch ribs and the bridge floor, the length of the horizontal beams is larger than the width of the bridge floor, the bottom ends of the booms are in threaded connection to the two ends of the horizontal beams, and the top ends of the booms are fixed to the arch ribs. The invention aims at providing the arch bridge boom structure. According to the structure system, as the horizontal beams extends outwards, the booms can be disassembled and replaced conveniently; meanwhile, the novel boom structure can be directly connected with the arch ribs and the horizontal beams on the bridge floor and can be stretched and drawn on the bridge floor, so that the problems of rust and corrosion of existing boom anchoring areas is completely solved, and safety of a boom arch bridge is improved.

The invention discloses a display panel and an electronic device. The display panel comprises a flexible display panel which comprises a display region and a bending region disposed outside the display region. The display region and the bending region are of an integrated structure, the bending area is provided with a bending part and a bending protection part, and a metal wire is arranged in thebending part. The bending protection cloth is distributed at the two sides of the bending part, and the bending part and the bending protection part are of an integrated structure. According to the embodiment of the invention, the bending protection part is additionally arranged in the bending area, the bending protection part is provided with the plurality of protection part metal wires, and themetal wires in the bending protection cloth are used for improving the local stress borne by the source and drain metal wires of the bending part during bending, so that the stress concentration coefficient of the metal wires in the bending area during bending is reduced, and accordingly the phenomenon that the source and drain metal wires in the bending area are broken is improved, the bending resistance is improved, and the production yield of products is improved.

A sealing system for an engine comprising a single layer of sheet material, the sheet having an upper surface adapted to sealably contact a first engine component and a lower surface adapted to sealably contact a second engine component, and bead portions profiled on the gasket, where the gasket profile is optimized with varying heights and widths so as to create portions of varying stiffness adjacent to one another. The bead portions are profiled so as to be concentric with a combustion or cylinder chamber of the engine, and the bead portions include a portion of high stiffness adjacent to a portion of high recovery, the portion of high stiffness having a sharper angle protruding away from the plane comprising the single layer gasket than for the adjacent portion of high recovery. The optimized profile allows use of single layer gaskets to replace multiple layer gaskets.

The invention discloses a pairing method of a circular low-temperature multi-effect seawater desalination evaporator, which includes the following steps: Step 1: Select an adjustable support rod whose diameter is suitable for the first circular evaporator and connect it to the fixed support rod Between the telescopic part; Step 2: The lower half circle of the first circular evaporator is welded to the lower half circle of the second circular evaporator; Step 3: The upper half circle of the first circular evaporator is welded to the upper half circle of the second circular evaporator connected. The invention can evenly disperse the welding stress on the evaporator and ensure the welding quality. The invention is suitable for circular evaporators and used for butt welding.

The invention discloses an assembly method for a square low-temperature multi-effect seawater desalination evaporator. An assembly device for the low-temperature multi-effect seawater desalination evaporator is used for adjusting the flatness of a first square evaporator. The method includes the following steps that 1, a bottom plate of the first square evaporator and a bottom plate of a second square evaporator are welded to be assembled; 2, a left side plate of the first square evaporator and a left side plate of the second square evaporator are welded to be connected, and a right side plateof the first square evaporator and a right side plate of the second square evaporator are welded to be connected; 3, a top plate of the first square evaporator and a top plate of the second square evaporator are welded to be connected. According to the method, welding stress is dispersed on the square evaporators, welding stress concentration is avoided, and welding quality is ensured. The methodis suitable for the assembly welding of square evaporators.