System dynamics modeling focuses on understanding the overall behavior of complex systems over time using stocks, flows, and feedback loops. It represents interactions between components while ignoring smaller details. To create a system dynamics model in AnyLogic, you first define the system components and relationships, build the model by adding components to the graphical editor, specify equations for variable changes over time using properties, set initial stock values, connect variables to model feedback loops, run the simulation by configuring settings, and analyze results with graphs.

1. System dynamics modeling and steps
to create in anylogic
Submitted by:-
Maida Tariq
20011598-077
SIMULATION & MODELING

2. System dynamics modeling
System Dynamics focuses on understanding the overall
behavior of complex systems over time. It uses stocks, flows,
and feedback loops to represent the interactions between
different components of a system. It's like looking at the big
picture and understanding how things change as time goes on.
Example:-
You'd use SD to model the overall flow of traffic on a
road network, focusing on variables like traffic
volume, congestion, and travel times. Feedback loops
could represent how congestion influences travel
speed.

3. Advantages
• Long-Term Trends: It's great for studying how systems
change over extended periods.
• Policy Testing: Helps test different policies or strategies and
their effects.
• Simplicity: Focuses on overall trends and interactions,
ignoring smaller details.
• Feedback Loops: Captures how changes loop back and
affect the system.

4. Disadvantages
• Less Individual Detail: Doesn't focus much on individual
entities' behavior.
• Learning Curve: Can be complex to set up and understand.
• Complexity Limitation: Might not handle intricate
interactions well.

5. System dynamics modeling in anylogic
AnyLogic is a popular multi-method simulation software that supports asystem
dynamics modeling. To create an system dynamics simulation in AnyLogic, you
typically follow these steps:
 Define System:
Identify components and their relationships.
 Build Model:
Create new "System Dynamics" model in AnyLogic.
Drag and drop components onto the graphical editor.
 Equations:
Specify equations for variables' changes over time.
Use properties to input differential equations.

6. Cont..
 Initial Conditions:
Set initial values for stocks (starting state).
 Feedback Loops:
Connect variables to their past values to model feedback.
 Run Simulations:
Configure simulation settings (duration, time step).
Click "Run" to execute simulation.
 Analyze Results:
Visualize results with graphs and charts.
Interpret outcomes and trends.