```python
import pydpf.core as dpf

model = dpf.Model("path/to/result_file.rst")
node_ids = model.metadata.mesh.node_ids
min_surrounding_elements = model.metadata.mesh.get_min_surrounding_elements(node_ids)
volume_by_element = model.metadata.results.volume_by_element
min_elements_by_node = model.metadata.results.get_min_elements_by_node(volume_by_element)
workflow = dpf.Workflow()
workflow.set_input(model)
workflow.compute_equivalent_stress_averaged_on_elements()
workflow.apply_dot_product("seqv.volume")
sum_stress = workflow.get_output("sum_stress")
total_volume = workflow.get_output("total_volume")
average_stress = sum_stress / total_volume
workflow.plot_equivalent_elemental_stress()
workflow.plot_volume_averaged_elemental_equivalent_stress()
workflow.use_operator("same_algorithm")
```