MSC Software Complex Connections MSC,EASY5 Connections between the GP components are usually the connection of a single output of the from component to a single input of the to component The real strength of MSC EASY5 is its ability to use a single connection to represent a physical association between two components of a physical system Examples: Hydraulic fluid flowing from a valve into a heat exchanger Electric power flowing from a transmission line to a transformer Mechanical power flowing from a drive shaft to a differential Modeling these associations requires multi-variable, bi-directional information passing between the component models Example(Hydraulic connection -simplified) Flow rate Valye Temperature Heat Component Pressure Exchanger EAS103 Fluid Power Systems Advanced Class-Chart 26
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 26 MSC.EASY5TM • Connections between the GP components are usually the connection of a single output of the from component to a single input of the to component • The real strength of MSC.EASY5 is its ability to use a single connection to represent a physical association between two components of a physical system Examples: Hydraulic fluid flowing from a valve into a heat exchanger Electric power flowing from a transmission line to a transformer Mechanical power flowing from a drive shaft to a differential • Modeling these associations requires multi-variable, bi-directional information passing between the component models Example (Hydraulic connection - simplified): Valve Component Heat Exchanger Flow rate Temperature Pressure Complex Connections
MSC Software MSCEASY5 Port connections A component port is a collection of variables( both inputs and outputs) that can be grouped to represent an interface to a physical connection a port connection between a port on one component to a port on a second component consists of: A connection of each output variable of either port to the input of the other with port the same quantity name( ignoring the port name) Ports, such as In and Out, are part of the MSC EASY5 name Port= in Quantity Name=PP In PH Component= PH Conventional names W for flow rate, and so on) and ports make automatic connection possible Also can check for complete connection- that is, won t misconnect: W= flow rate to w= shaft speed because rest of port names don' t match EAS103 Fluid Power Systems Advanced Class-Chart 27
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 27 MSC.EASY5TM • A component port is a collection of variables (both inputs and outputs) that can be grouped to represent an interface to a physical connection • A port connection between a port on one component to a port on a second component consists of: A connection of each output variable of either port to the input of the other with port the same quantity name (ignoring the port name) • Ports, such as In and Out, are part of the MSC.EASY5 name: Port Connections • Conventional names (W for flow rate, and so on) and ports make automatic connection possible • Also can check for complete connection – that is, won’t misconnect: W = flow rate to W = shaft speed because rest of port names don’t match Quantity Name = P P_In_PH Port = In Component = PH
MSC Software MSCEASY5 Storage and resistive Boundary conditions Storage W Inlet or Exit 二Q P Resistive nlet o Exit ⊙ In general, like boundary conditions cannot be connected together Components with both inlet and exit storage boundary conditions are labeled (S Components with both inlet and exit resistive boundary conditions are labeled (R) S/R Components with inlet storage and exit resistive boundary conditions are labeled EAS103 Fluid Power Systems Advanced Class-Chart 28
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 28 MSC.EASY5TM Storage Resistive • In general, like boundary conditions cannot be connected together • Components with both inlet and exit storage boundary conditions are labeled • Components with both inlet and exit resistive boundary conditions are labeled • Components with inlet storage and exit resistive boundary conditions are labeled W P Inlet or Exit S P W Inlet or Exit R R S/R S Storage and Resistive Boundary Conditions
MSC Software MSCEASY5 Component Pins Aid Connection Connection points on components are called pins Pins can be associated with ports, so that when a connection is made to a component, the connection attaches at the appropriate place on the icon MSC EASY5 hydraulic components use the following convention for pins to help identify what kind of connection can be made Storage S Resistive ) Storage Inlets ResistiⅤe Connections must be made from out ports to in ports, and from storage to resistive or resistive to storage This translates to: filled pins connect to unfilled pins of the opposite color EAS103 Fluid Power Systems Advanced Class-Chart 29
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 29 MSC.EASY5TM Component Pins Aid Connection Storage Storage Resistive Resistive } } Outlets Inlets • Connection points on components are called pins • Pins can be associated with ports, so that when a connection is made to a component, the connection attaches at the appropriate place on the icon • MSC.EASY5 hydraulic components use the following convention for pins to help identify what kind of connection can be made • Connections must be made from Out ports to In ports, and from storage to resistive or resistive to storage • This translates to: filled pins connect to unfilled pins of the opposite color
MSC Software MSCEASY5 Open-Loop Hydraulic System Model Global Fluid Analytic Function Properties accumulated cPu times enerator 阿 T =TFK Pressure soure or S1 Pil Variable Volume Filter Metering Positive Disp. Pump EAS103 Fluid Power Systems Advanced Class-Chart 30
MSC.Software EAS103 Fluid Power Systems Advanced Class - Chart 30 MSC.EASY5TM Open-Loop Hydraulic System Model Pressure source or sink P = PTK T = TFK Variable Volume Positive Disp. Pump Filter Pipe Metering Valve S_Out_AF Analytic Function Generator Global Fluid Properties Hydraulic Fluid FC Simulated and accumulated CPU times